The contents of this directory are software to demonstrate
process recovery for the implementation of a non-optional
logout command file which can not be circumvented by an
unprivileged user.  This software is supplied by Texas
Instruments (TI) to demonstrate the principles and mechanisms
presented during a session at the Spring 1986 DECUS in Dallas,
Texas by Larry L. Johnson, McKinney Computer Services,
Defense Systems and Electronics Group of TI.

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	!!! WARNING !!! WARNING !!!

READ ALL DOCUMENTATION CAREFULLY BEFORE USING THIS SOFTWARE!

The software supplied is the result of a feasibility study.
It is not intended to be used as supplied and CONTAINS KNOWN
DEFICIENCIES which make it UNSUITABLE for use as production
software.  The software ONLY demonstrates the feasibility of a
robust logout command file activator, suggesting specific
mechanisms on which a production version can be based.

It is intended that this software be used as a guide by
experienced VMS system programmers intimately familiar with
VMS internals to build a suitable production version.

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	DIRECTORY CONTENTS

The file 1_DIRECTORY_CONTENTS.TXT contains a description of
the files in this directory.

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	DOCUMENTATION

A copy of the feasibility report is included in this directory
and must be read and understood before attempting to run the
demonstration software.

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	BUILDING the DEMONSTRATION

A command procedure for building the necessary images from
the source is included.

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	RUNNING the DEMONSTRATION

A convenient way to run the demonstration is in a spawned
subprocess.

The process must have CMKRNL privilege to successfully run
the loader.  

The processes default directory should be the directory
containing the logout command file activator.  No attempt
has been made to give this software the usual flexibility
of production software (see the WARNING above).  Should
you wish to load the software while the default directory
is other than this directory, SETUP.COM will have to be
modified.

Execute the following commands in the context of the process
which is to have the logout command file activator loaded.

	$ @SETUP
	$ RUN LOADER

The loader will merge the command file activator into the
processes address space, outputting a summary message of
the load, and any status messages concerning failure (if
for example the process does not have CMKRNL privilege).

From that point on, any image that is run will result
in the output of demonstration messages at the completion
of the image (user mode image rundown).

DO NOT LOGOUT of the process.  Rather, issue the command:

	$ STOP/ID=0

ISSUING the LOGOUT command will result in a NON-DELETABLE
PROCESS.  (You'll find the reason for this in the feasibility
report).

On issuing the above STOP command, the process will egress
through the mechanisms of the rundown interceptor.  Each
significant point in the execution will be marked by a message
demonstrating the flow of the mechanisms.