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From: mishkin@APOLLO.UUCP (Nathaniel Mishkin)
Newsgroups: mod.computers.apollo
Subject: Re: DM commands CV and RO
Message-ID: <8603040448.AA05051@uw-beaver.arpa>
Date: Mon, 3-Mar-86 12:00:49 EST
Article-I.D.: uw-beave.8603040448.AA05051
Posted: Mon Mar  3 12:00:49 1986
Date-Received: Wed, 5-Mar-86 04:09:10 EST
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Approved: apollo@yale-comix.arpa


    I am also curious to know how the DM commands "ro" and "cv" work.

The file_modified variable is maintained completely within the DM.  I.e.
it's an attribute of the "pad" not the file.  Since the DM does not use
the pad_$ calls to implement CV (or any of the other DM commands), it
can do whatever it pleases.  As to why the semantics of the
pad_$create[_window] calls differ from CV/CE in the interpretation of
read-only/modified flags, that's a longer story, that I think is
probably not worth going into.

                -- Nat Mishkin (with help from Jim Hamilton)
                   Apollo Computer
                   apollo!yale

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