Browse Prior Art Database

Environment Facility Supporting an Installable File System

IP.com Disclosure Number: IPCOM000119933D
Original Publication Date: 1991-Mar-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

Cox, D: AUTHOR [+2]

Abstract

This article describes the concept of supporting an Installable File System in OfficeVision*/MVS (OV/MVS). In OS/2* there is the ability to support an Installable File System (IFS). An IFS consists of code that may be installed to provide a Logical Input/Output (IO) subsystem. It provides the ability for the Operating System to support devices other than those supplied by the original manufacturer. The IFS provides the capability of an access method, such as VSAM or VTAM*. However, it offers greater flexibility to the user than the normal access method. The IFS allows users to support access methods for devices that otherwise would not be possible from the base operating system, such as a High Performance File System (HPFS) or an Optical Disk Drive.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Environment Facility Supporting an Installable File System

      This article describes the concept of supporting an
Installable File System in OfficeVision*/MVS (OV/MVS).  In OS/2*
there is the ability to support an Installable File System (IFS). An
IFS consists of code that may be installed to provide a Logical
Input/Output (IO) subsystem.  It provides the ability for the
Operating System to support devices other than those supplied by the
original manufacturer.  The IFS provides the capability of an access
method, such as VSAM or VTAM*. However, it offers greater flexibility
to the user than the normal access method. The IFS allows users to
support access methods for devices that otherwise would not be
possible from the base operating system, such as a High Performance
File System (HPFS) or an Optical Disk Drive. The Operating System
provides the definition of how the user is to interface to the IFS,
such as the OPEN command. When the command is received, the Operating
System then asks the IFS if it is interested, based on the File name
which is being opened. If the IFS is interested, it accepts the
command and then performs the function and returns the response to
the user. The IFS may consist of one or more device drivers. It uses
the device drivers to carry out functions.

      The goal is to provide equivalent function for IFS capability
in OV/MVS. OV/MVS is not an operating system, but it does provide a
platform for Office and other Services that have counterparts on the
OfficeVision/2 (OV/2) platform. The solution consists of two pieces.
...