Fix unreliable cloud placeholder file detection #4
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Owner
WayneKoorts
commented
Dec 8, 2025
WayneKoorts
commented
- Add missing Windows file attribute constants (RECALL_ON_OPEN, SPARSE_FILE, REPARSE_POINT)
- Fix verbose output bug that displayed wrong attribute name (showed RECALL_ON_DATA_ACCESS as "Pinned")
- Rewrite hydration status detection logic:
- DEHYDRATED: File has RECALL_ON_DATA_ACCESS or RECALL_ON_OPEN (placeholder needing data)
- HYDRATING: File has recall attribute AND PINNED (actively downloading)
- HYDRATED: File has no recall attributes (data locally available)
- Fix operator precedence bug in original hydrating detection
- Improve cloud file detection to use RECALL_ON_OPEN attribute
- Add internal methods for testability (DetermineHydrationStatusFromAttributes, DeterminePinStatusFromAttributes)
- Add unit test project with comprehensive tests for hydration and pin status detection
- Add missing Windows file attribute constants (RECALL_ON_OPEN, SPARSE_FILE, REPARSE_POINT) - Fix verbose output bug that displayed wrong attribute name (showed RECALL_ON_DATA_ACCESS as "Pinned") - Rewrite hydration status detection logic: - DEHYDRATED: File has RECALL_ON_DATA_ACCESS or RECALL_ON_OPEN (placeholder needing data) - HYDRATING: File has recall attribute AND PINNED (actively downloading) - HYDRATED: File has no recall attributes (data locally available) - Fix operator precedence bug in original hydrating detection - Improve cloud file detection to use RECALL_ON_OPEN attribute - Add internal methods for testability (DetermineHydrationStatusFromAttributes, DeterminePinStatusFromAttributes) - Add unit test project with comprehensive tests for hydration and pin status detection
- Add Cloud Filter API P/Invoke declarations (cldapi.dll) - Add CF_PLACEHOLDER_STATE enum with all placeholder state flags - Add GetAttributesAndReparseTag method to get file attributes and reparse tag - Add GetPlaceholderState method to query Cloud Filter API - Add IsCloudPlaceholder and IsFullyHydrated helper methods - Update GetHydrationStatus to use CF API as primary detection method with automatic fallback to attribute-based detection - Add DetermineHydrationStatusFromPlaceholderState for CF API-based detection - Improve verbose output to show placeholder state flags - Add comprehensive unit tests for placeholder state detection The Cloud Filter API provides more authoritative detection: - PARTIAL and PARTIALLY_ON_DISK flags directly indicate hydrating state - No longer need to infer hydration from PINNED + RECALL combination - Graceful fallback when cldapi.dll is not available (older Windows)
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