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dirstate-v2: Replace the 32-bit `mode` field with two bits

Authored by SimonSapin on Oct 12 2021, 1:00 PM.



Previously we stored the entire value from stat_result.st_mode,
like dirstate-v1 does. However only the executable permission
and type of file (only symbolic links and normal files are supported)
are relevant to Mecurial.

So replace this field with two bits in the existing bitfield byte.
For now the unused space is left as padding, as it will be used
for something else soon.

Diff Detail

rHG Mercurial
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Automatic diff as part of commit; unit tests not applicable.

Event Timeline

SimonSapin created this revision.Oct 12 2021, 1:00 PM
This revision was not accepted when it landed; it landed in state Needs Review.
This revision was automatically updated to reflect the committed changes.