NDLI: A Toolkit for Interposing User Code at the System Interface

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Volume 26, Issue 4, Oct. 1992

Volume 26, Issue 3, July 1992

Volume 26, Issue 2, April 1992

13th ACM Symposium on Operating Systems Principles

A Lock-Free Multiprocessor OS Kernel

Opal: A Single Address Space System for 64-bit Architectures

Systems Software for Wireless Mobile Computing

DataMesh parallel storage servers

A Methodology for Implementing Highly Concurrent Data Objects

Operating Systems Research Related to the Galactica Net Architecture

Project Sequoia 2000

Network and Operating System Support for Digital Audio and Video

The Virtual System Project

The BBFS Filesystem Model

Application-Controlled Physical Memory using External Page-Cache Management

A Toolkit for Interposing User Code at the System Interface

Modularity and Protection are Orthogonal, or “Why μ-kernel Architectures are Flawed”

A Toolkit for Building Reactive Systems or A Minute on Meta

Performance Assertion Checking

The Ficus Replicated File System

Integrating Security in a Group Oriented Distributed System

Supporting Access to Stored Multimedia Data in Large Distributed Systems Work in Progress

FLIP; an Internetwork Protocol for Supporting Distributed Systems

Structuring and Communication in the Vanguard OS Kernel

Design and Implementation of a Multicast Transport Service

Summary of the Second International Workshop on Network and Operating System Support for Digital Audio and Video

An annotated bibliography of dependable distributed computing

Distributed computing in a NUMP (Non-Uniform Message-Passing) environment

A survey of asynchronous remote procedure calls

Sources of unbounded priority inversions in real-time systems and a comparative study of possible solutions

Volume 26, Issue 1, Jan. 1992

A Toolkit for Interposing User Code at the System Interface

Content Provider	ACM Digital Library
Author	Jones, Michael B.
Abstract	Many contemporary operating systems utilize a system call interface between the operating system and its clients. Increasing numbers of systems are providing low-level mechanisms for intercepting and handling system calls in user code. Nonetheless, they typically provide no higher-level tools or abstractions for effectively utilizing these mechanisms. Using them has typically required reimplementation of a substantial portion of the system interface from scratch, making the use of such facilities unwieldy at best.I am currently constructing an object-oriented toolkit which substantially increases the ease of interposing user code between clients and instances of the system interface by allowing such code to be written in terms of the high-level objects provided by this interface, rather than in terms of the intercepted system calls themselves. This toolkit helps enable new interposition agents to be written which otherwise would not have been attempted.I am also currently using this toolkit to construct several agents including: protected environments for running untrusted binaries, modified filesystem namespaces, logical devices implemented entirely in user space, transparent network data compression and/or encryption agents, and system call tracing tools. Examples of other interesting agents which could be built include: transactional software environments, and emulators for other operating system environments.
File Format	PDF
Journal	ACM SIGOPS Operating Systems Review (OPSR)
Volume Number	26
Issue Number	2
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1975-04-01
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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