[TUHS] VFS prior to 1984
Dave Horsfall
dave at horsfall.org
Mon Jul 6 14:42:41 AEST 2020
On Sat, 4 Jul 2020, Larry McVoy wrote:
>> Aren't holes part of the file system semantics?
>
> I'm not talking about legit holes, I'm talking about where your data
> used be served up as a list of zeros.
Ah; my mistake... Too much blood in my coffee stream.
> The SCCS checksum is weak but kinda handy. You could see single bit
> errors with it (at least you could in BitKeeper). [...]
I used to edit SCCS files if I stuffed up an update (and didn't want to
make another update); I discovered that if I zeroed the checksum then it
would be recalculated... I have no idea what happened should the
"genuine" checksum turn out to be zero.
-- Dave
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