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fix(fs): preserve Windows DACLs across atomic replacement

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Copy an existing target's DACL onto the empty staging file before any content is written, then publish with ReplaceFileW so Windows replacement keeps the target security descriptor instead of inheriting the broader parent policy.

Keep new-file inheritance and POSIX mode behavior unchanged, retain the already-protected temp when a concurrently removed target requires rename fallback, and translate native errors into Node-style codes for the filesystem error boundary.

Add host-independent Win32 binding coverage, native Windows descriptor assertions, package documentation, and a bilingual implemented RFC that supersedes the earlier inheritance-only replacement claim.
This commit is contained in:
Tianyi Cui
2026-07-19 12:38:18 +08:00
parent 46580e4083
commit 2b673bd68d
12 changed files with 472 additions and 16 deletions
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docs/rfc/INDEX.md
+6
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@@ -89,6 +89,12 @@ Generated by `pnpm run gen-rfc-index` from the RFC tree — never edit by hand;
| [Optional time-context plugin](implemented/feature/2026-07-14-time-context-plugin.md) | 2026-07-14 |
| [Durable per-step time context](implemented/feature/2026-07-16-durable-per-step-time-context.md) | 2026-07-16 |
### Bug-fix
| Title | First proposed |
|---|---|
| [Preserve Windows DACLs during atomic file replacement](implemented/bug-fix/2026-07-19-windows-atomic-write-dacl-preservation.md) | 2026-07-19 |
### Simplification
| Title | First proposed |