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A Note on the Confinement Problem
January 1, 1973
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Authors
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Butler Lampson
Publication Type
Inproceedings
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Association for Computing Machinery, Inc.
Copyright © 1973 by the Association for Computing Machinery, Inc. Permission to make
digital or hard copies of part or all of this work for personal or classroom use is granted without
fee provided that copies are not made or distributed for profit or commercial advantage and that
copies bear this notice and the full citation on the first page. Copyrights for components of this
work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy
otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific
permission and/or a fee. Request permissions from Publications Dept, ACM Inc., fax +1 (212)
869-0481, or permissions@acm.org. The definitive version of this paper can be found at
ACM’s Digital Library –http://www.acm.org/dl/.
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Abstract
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Related Info
Abstract
This note explores the problem of confining a program during its execution so that it cannot
transmit information to any other program except its caller. A set of examples attempts to stake
out the boundaries of the problem. Necessary conditions for a solution are stated and informally
justified.
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