08a4225437
Summary: Ref T12470. Provides an "integrity" utility which runs in these modes: - Verify: check that hashes match. - Compute: backfill missing hashes. - Strip: remove hashes. Useful for upgrading across a hash change. - Corrupt: intentionally corrupt hashes. Useful for debugging. - Overwrite: force hash recomputation. Users normally shouldn't need to run any of this stuff, but this provides a reasonable toolkit for managing integrity hashes. I'll recommend existing installs use `bin/files integrity --compute all` in the upgrade guidance to backfill hashes for existing files. Test Plan: - Ran the script in many modes against various files, saw expected operation, including: - Verified a file, corrupted it, saw it fail. - Verified a file, stripped it, saw it have no hash. - Stripped a file, computed it, got a clean verify. - Stripped a file, overwrote it, got a clean verify. - Corrupted a file, overwrote it, got a clean verify. - Overwrote a file, overwrote again, got a no-op. Reviewers: chad Reviewed By: chad Maniphest Tasks: T12470 Differential Revision: https://secure.phabricator.com/D17629
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