Section for Related Work % \section{Related Work} Rootkit detection
... Gibraltar, another behavior-based kernel inspection rootkit detection tool, detects kernel level rootkits by using an initial training period in which invariants on kernel data structures are created \cite{baliga2008automatic}. Due to the way that Gilbratar monitors the kernel, it must reside on a s ...
... Gibraltar, another behavior-based kernel inspection rootkit detection tool, detects kernel level rootkits by using an initial training period in which invariants on kernel data structures are created \cite{baliga2008automatic}. Due to the way that Gilbratar monitors the kernel, it must reside on a s ...
2-Operating-System Structures
... Managed by run-time support library (set of functions built into libraries included with compiler) ...
... Managed by run-time support library (set of functions built into libraries included with compiler) ...
Document
... In some cases, may be more parameters than registers Parameters stored in a block, or table, in memory, and address of block passed as a parameter in a register This approach taken by Linux and Solaris Parameters placed, or pushed, onto the stack by the program and popped off the stack by the ...
... In some cases, may be more parameters than registers Parameters stored in a block, or table, in memory, and address of block passed as a parameter in a register This approach taken by Linux and Solaris Parameters placed, or pushed, onto the stack by the program and popped off the stack by the ...
Chapter-3-OpratingSystemSupport
... distributed operating system is that users tend to prefer to have a degree of autonomy for their machines, even in a organization. Unix and Windows are two examples of network operating systems. Those have a networking capability built into them and so can be used to access remote resources usin ...
... distributed operating system is that users tend to prefer to have a degree of autonomy for their machines, even in a organization. Unix and Windows are two examples of network operating systems. Those have a networking capability built into them and so can be used to access remote resources usin ...
The Linux System 21.2 Silberschatz, Galvin and Gagne ©2009
... Linux uses two techniques to protect critical sections: 1. Normal kernel code is nonpreemptible (until 2.4) – when a time interrupt is received while a process is executing a kernel system service routine, the kernel’s need_resched flag is set so that the scheduler will run once the system call has ...
... Linux uses two techniques to protect critical sections: 1. Normal kernel code is nonpreemptible (until 2.4) – when a time interrupt is received while a process is executing a kernel system service routine, the kernel’s need_resched flag is set so that the scheduler will run once the system call has ...
The Linux System
... hardware, but also runs on a variety of other platforms The core Linux operating system kernel is entirely original, but it can run ...
... hardware, but also runs on a variety of other platforms The core Linux operating system kernel is entirely original, but it can run ...
Improving Per-Node Efficiency in the Datacenter with New OS
... of this trend, most datacenters run commodity, off-the-shelf operating systems with few customizations that change the OS in any significant way. Since all nodes run the same software on the same OS, additional nodes can be easily deployed to supplement rising demand. However, only focusing on scala ...
... of this trend, most datacenters run commodity, off-the-shelf operating systems with few customizations that change the OS in any significant way. Since all nodes run the same software on the same OS, additional nodes can be easily deployed to supplement rising demand. However, only focusing on scala ...
Discovering Computers Fundamentals 3rd Edition
... With a command-line interface, a user types commands or presses special keys on the keyboard to enter data and instructions ...
... With a command-line interface, a user types commands or presses special keys on the keyboard to enter data and instructions ...
Preserving Computing`s Past: Restoration and Simulation
... The continuous improvements in computing technology cause the rapid obsolescence of computer systems, architectures, media, and devices. Since old computing systems are rarely perceived to have any value, the danger of losing portions of the computing record is significant. When a computing architec ...
... The continuous improvements in computing technology cause the rapid obsolescence of computer systems, architectures, media, and devices. Since old computing systems are rarely perceived to have any value, the danger of losing portions of the computing record is significant. When a computing architec ...
... separating management from protection. This paper describes an exokernel system that allows specialized applications to achieve high performance without sacrificing the performance of unmodified UNIX programs. It evaluates the exokernel architecture by measuring end-to-end application performance on ...
Linus Torvalds - cs.helsinki.fi
... thing was doing nothing, the other was reading the 719-page book (operating system design and implementation). After reading this book, Linus had a more systematic understanding of the machine and code. [2] In the early 1990s, MINIX was a popular operating system with its inexpensive proprietary lic ...
... thing was doing nothing, the other was reading the 719-page book (operating system design and implementation). After reading this book, Linus had a more systematic understanding of the machine and code. [2] In the early 1990s, MINIX was a popular operating system with its inexpensive proprietary lic ...
Operating System Structures - McMaster Computing and Software
... Shell has no idea how ‘rm’ command is implemented and which system call is used to process the request. ...
... Shell has no idea how ‘rm’ command is implemented and which system call is used to process the request. ...
Slides
... operating system kernel as though they were all hardware A virtual machine provides an interface identical to the underlying bare hardware The operating system host creates the illusion that a process has its own processor and (virtual memory) Each guest provided with a (virtual) copy of underlying ...
... operating system kernel as though they were all hardware A virtual machine provides an interface identical to the underlying bare hardware The operating system host creates the illusion that a process has its own processor and (virtual memory) Each guest provided with a (virtual) copy of underlying ...
slides - Caltech
... • A lot of time spent up-front designing interfaces between the layers • Makes it much easier to identify and isolate bugs, though • Might actually save companies time in the long run, but companies are usually afraid of taking that risk • Layered approach can greatly reduce OS performance • Interac ...
... • A lot of time spent up-front designing interfaces between the layers • Makes it much easier to identify and isolate bugs, though • Might actually save companies time in the long run, but companies are usually afraid of taking that risk • Layered approach can greatly reduce OS performance • Interac ...
9. Application/Kernel Interface
... ... but it is still too high level for many OS interactions E.g., it does not specify file systems, network interfaces or power management C applications deal with portability with I I I ...
... ... but it is still too high level for many OS interactions E.g., it does not specify file systems, network interfaces or power management C applications deal with portability with I I I ...
PowerPoint Format
... Linux uses two techniques to protect critical sections: 1. Normal kernel code is nonpreemptible – when a time interrupt is received while a process is executing a kernel system service routine, the kernel’s need_resched flag is set so that the scheduler will run once the system call has completed an ...
... Linux uses two techniques to protect critical sections: 1. Normal kernel code is nonpreemptible – when a time interrupt is received while a process is executing a kernel system service routine, the kernel’s need_resched flag is set so that the scheduler will run once the system call has completed an ...
ch18
... It has been designed to run efficiently and reliably on common PC hardware, but also runs on a variety of other platforms ...
... It has been designed to run efficiently and reliably on common PC hardware, but also runs on a variety of other platforms ...
Using Linux Kernel Modules For Operating Systems Class Projects
... The second project is to write a program that reports the behavior of the system from the various files in the /proc file system. This project establishes an understanding of /proc files which are used in the kernel module projects. This is Lab 3.1 as described in Nutt's text book.7 The third projec ...
... The second project is to write a program that reports the behavior of the system from the various files in the /proc file system. This project establishes an understanding of /proc files which are used in the kernel module projects. This is Lab 3.1 as described in Nutt's text book.7 The third projec ...
Introduction - Computer Science
... reliability: what happens if something goes wrong – hardware or software extensibility: can we add new features? communication: how do programs exchange information concurrency: how are parallel activities created and controlled? scale: what happens as demands or resources increase? persistence: how ...
... reliability: what happens if something goes wrong – hardware or software extensibility: can we add new features? communication: how do programs exchange information concurrency: how are parallel activities created and controlled? scale: what happens as demands or resources increase? persistence: how ...
Berkeley NOW
... – ability to remove components (modularity) + fault boundaries more important than performance – legacy applications less dominant ...
... – ability to remove components (modularity) + fault boundaries more important than performance – legacy applications less dominant ...
Berkeley Software Distribution
Berkeley Software Distribution (BSD) is a Unix operating system derivative developed and distributed by the Computer Systems Research Group (CSRG) of the University of California, Berkeley, from 1977 to 1995. Today the term ""BSD"" is often used non-specifically to refer to any of the BSD descendants which together form a branch of the family of Unix-like operating systems. Operating systems derived from the original BSD code remain actively developed and widely used.Historically, BSD has been considered a branch of Unix, Berkeley Unix, because it shared the initial codebase and design with the original AT&T Unix operating system. In the 1980s, BSD was widely adopted by vendors of workstation-class systems in the form of proprietary Unix variants such as DEC ULTRIX and Sun Microsystems SunOS. This can be attributed to the ease with which it could be licensed, and the familiarity the founders of many technology companies of the time had with it.Although these proprietary BSD derivatives were largely superseded by the UNIX System V Release 4 and OSF/1 systems in the 1990s (both of which incorporated BSD code and are the basis of other modern Unix systems), later BSD releases provided a basis for several open source development projects, e.g. FreeBSD, OpenBSD, NetBSD, Darwin or PC-BSD, that are ongoing. These, in turn, have been incorporated in whole or in part in modern proprietary operating systems, e.g. the TCP/IP networking code in Windows NT 3.1 and most of the foundation of Apple's OS X and iOS.