Message-Id: <199704251241.OAA11853@grendel.sylaba.poznan.pl>
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From: "Mark Habersack" <grendel AT hoth DOT amu DOT edu DOT pl>
Organization: PPP (Pesticide Powered Pumpkins)
To: alaric AT abwillms DOT demon DOT co DOT uk
Date: Fri, 25 Apr 1997 14:41:41 +0100
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Subject: Re: File system ideas
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Once upon a time (on 24 Apr 97 at 20:08) Alaric B. Williams said:

> > Post your ideas, they sound fascinating.  apparently the Vax have some
> > scheme where you can place "alarms" on certain files for when they are
> > accessed. (for example the shadow password file... someone reads it who
> > isn't in the "your allowed" catagory mails root, and runs shutdown -h now"
> > :)
> 
> Well, all these features are implementable, but putting them all in makes
> the filer rapidly bigger and slower! Therefore, I would suggest opting for a
> simple architecture, but with a well defined extension system.
> 
> EG, a file header has an optional field specifying a monitor module. This is
> a DLL that is notified of all access to the file. It can refuse access, if
> it performs an authentication role. It can log access. It can do all sorts
> of fun things like that.
> 
> It's flexible, and it's optional.
> 
> How about it?
Idea is excellent, only I'd argue about where to store the monitor 
information. IMO, the operating system should not store any information in 
the file itself - its structure is program-dependent and thus the OS may 
spoil something. Instead, we would make a dirent big enough to store such 
information. DLL you mentioned would be pointed at by something like a 
"symlink" field in the dirent.
==================================================
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Yesterday starts tommorow, tommorow starts today
And the problems seem to be we're picking up the
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