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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.arch
Subject: Re: Stealing a Great Idea from the 6600
Date: Wed, 31 Jul 2024 23:17:06 -0000 (UTC)
Organization: A noiseless patient Spider
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On Tue, 30 Jul 2024 19:52:14 -0500, BGB wrote:

> On 7/30/2024 6:51 PM, Lawrence D'Oliveiro wrote:
>
>> On Mon, 29 Jul 2024 22:40:39 -0500, BGB wrote:
>> 
>>> If a file has not been modified, and was already confirmed good, you
>>> don't really need to verify it again...
>> 
>> How do you tell whether it’s been modified or not, without actually
>> examining its entire contents?
> 
> If one is already intercepting every filesystem call, it is possible to
> keep track of whether a given file was opened for writing, deleted,
> written to, ...

Unless, of course, someone else is also intercepting those calls, and 
inserting their own calls.