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A portable file directory system

1980; Wiley; Volume: 10; Issue: 8 Linguagem: Inglês

10.1002/spe.4380100803

1097-024X

David R. Hanson,

Real-Time Systems Scheduling

Abstract A portable file directory system that provides a machine‐independent method for specifying files is described. The portable directory system, or PDS, facilitates uniform usage of portable software by supplying a standard for file specification. The PDS supports a hierarchical directory structure, similar to that in UNIX and Multics, and a set of primitives for manipulating the structure and preparing files for input/output. While the PDS participates in file specification, it does not participate in the actual i/o; it has no impact on i/o efficiency. The implementation, which is easily extended to include additional capabilities, is described. Experience in using the PDS as a part of command interpreters and preprocessors is also discussed.