6 Jul
2020
6 Jul
'20
4:42 a.m.
On Sat, 4 Jul 2020, Larry McVoy wrote:
Ah; my mistake... Too much blood in my coffee stream.
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. 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