2b470685e8
- Create 08-01-SUMMARY.md with execution results and metrics - Update STATE.md: Phase 8 complete, 12/~19 plans (63%) - Update ROADMAP.md: Phase 8 marked complete - Update REQUIREMENTS.md: DIR-01 through DIR-05 marked complete Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
120 lines
4.9 KiB
Markdown
120 lines
4.9 KiB
Markdown
---
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phase: 08-rust-directory-archiver
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plan: 01
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subsystem: archive
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tags: [rust, directory-traversal, unix-permissions, binary-format, toc-entry]
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# Dependency graph
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requires:
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- phase: 07-format-spec-update
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provides: v1.1 FORMAT.md with entry_type, permissions fields, directory entry semantics
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provides:
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- v1.1 TocEntry with entry_type and permissions fields (format.rs)
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- Recursive directory traversal in pack with relative paths
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- Directory hierarchy restoration with Unix mode bits in unpack
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- Entry type and permissions display in inspect
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- Directory round-trip integration tests
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affects: [09-backward-compat, 10-hardening, 11-polish]
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# Tech tracking
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tech-stack:
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added: []
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patterns: [collect_entries pattern for recursive directory traversal, DFS preorder for parent-before-child ordering, ProcessedFile entry_type discriminator for file vs directory handling]
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key-files:
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created: []
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modified:
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- src/format.rs
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- src/archive.rs
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- src/cli.rs
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- tests/round_trip.rs
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key-decisions:
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- "DFS preorder traversal with sorted children for deterministic parent-before-child ordering"
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- "Directory entries use zero-filled crypto fields (no data block) per FORMAT.md v1.1"
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- "Permissions captured via std::os::unix::fs::PermissionsExt::mode() & 0o7777"
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- "Standalone files use filename-only names; directory children use relative paths with / separator"
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patterns-established:
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- "collect_entries(): unified entry collection for mixed file/directory inputs"
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- "process_file(): extracted crypto pipeline into reusable function"
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- "make_directory_entry(): factory for zero-length directory ProcessedFile"
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requirements-completed: [DIR-01, DIR-02, DIR-03, DIR-04, DIR-05]
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# Metrics
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duration: 6min
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completed: 2026-02-26
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---
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# Phase 8 Plan 01: Rust Directory Archiver Summary
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**v1.1 format implementation with recursive directory traversal, Unix permission preservation, and directory/file type discrimination in pack/unpack/inspect**
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## Performance
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- **Duration:** 6 min
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- **Started:** 2026-02-26T18:42:02Z
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- **Completed:** 2026-02-26T18:48:33Z
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- **Tasks:** 3
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- **Files modified:** 4
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## Accomplishments
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- Updated format.rs to v1.1 binary layout: VERSION=2, TocEntry with entry_type (u8) and permissions (u16), entry_size=104+name_length
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- Implemented recursive directory traversal in pack() with parent-before-child ordering and relative path naming
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- unpack() creates full directory hierarchy, restores Unix mode bits on both files and directories
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- inspect() displays entry type (dir/file) and octal permissions for each TOC entry
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- All 41 tests pass: 25 unit + 7 golden + 9 integration (3 new directory tests)
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: Update format.rs for v1.1 TOC entry layout** - `4e25d19` (feat)
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2. **Task 2: Update archive.rs and cli.rs for directory support** - `7820c18` (feat)
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3. **Task 3: Add directory round-trip integration test** - `8760981` (test)
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## Files Created/Modified
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- `src/format.rs` - v1.1 TocEntry with entry_type/permissions, VERSION=2, entry_size=104+N
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- `src/archive.rs` - Recursive directory traversal, permission capture/restore, directory-aware pack/unpack/inspect
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- `src/cli.rs` - Updated doc comments for directory support
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- `tests/round_trip.rs` - 3 new tests: directory round-trip, mixed files+dirs, inspect directory info
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## Decisions Made
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- Used DFS preorder with sorted children for deterministic parent-before-child ordering (no external walkdir dependency)
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- Extracted crypto pipeline into process_file() helper for reuse between single-file and directory-file processing
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- Directory entries skip data_offset computation and data block writing (offset=0, no ciphertext)
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- Permissions always stored as lower 12 bits of mode_t (0o7777 mask) per FORMAT.md v1.1 spec
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## Deviations from Plan
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### Auto-fixed Issues
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**1. [Rule 3 - Blocking] Added entry_type/permissions to archive.rs ProcessedFile during Task 1**
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- **Found during:** Task 1 (format.rs update)
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- **Issue:** After adding new fields to TocEntry, archive.rs TocEntry constructions failed to compile
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- **Fix:** Added entry_type and permissions fields to ProcessedFile struct and its construction in pack()
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- **Files modified:** src/archive.rs
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- **Verification:** cargo test --lib format:: passed all 13 tests
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- **Committed in:** 4e25d19 (Task 1 commit)
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---
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**Total deviations:** 1 auto-fixed (1 blocking)
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**Impact on plan:** Necessary compilation fix from cross-file dependency. No scope creep.
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## Issues Encountered
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None -- all tasks executed smoothly after the blocking compilation fix.
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## User Setup Required
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None - no external service configuration required.
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## Next Phase Readiness
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- v1.1 format fully implemented and tested
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- Ready for Phase 9 (backward compatibility) or Phase 10 (hardening) if planned
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- All existing v1.0 tests updated to v1.1 format (no backward compat with v1.0 archives per decision)
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---
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*Phase: 08-rust-directory-archiver*
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*Completed: 2026-02-26*
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