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fix(config): use r+ mode for fsync on Windows to prevent migration retry loop

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openSync with read-only mode fails fsync on Windows because FlushFileBuffers requires write-permission FD. This caused atomic writes to fail silently, leaving migrated config unwritten and triggering repeated migration + .bak.<timestamp> generation on every startup.

Same root cause as PR #3644 (#3643). Hyperplan disappear is a secondary symptom of plugin load instability.

Fixes #3877
This commit is contained in:
YeonGyu-Kim
2026-05-10 14:53:28 +09:00
parent 50699e3af1
commit f45452ae6c
1 changed files with 1 additions and 1 deletions
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src/shared/write-file-atomically.ts
+1 -1
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@@ -16,7 +16,7 @@ export function writeFileAtomically(
): void { ): void {
const tempPath = `${filePath}.tmp` const tempPath = `${filePath}.tmp`
writeFileSync(tempPath, content, "utf-8") writeFileSync(tempPath, content, "utf-8")
const tempFileDescriptor = openSync(tempPath, "r") const tempFileDescriptor = openSync(tempPath, "r+")
try { try {
tolerantFsyncSync(tempFileDescriptor, `writeFileAtomically:${filePath}`, deps.fsyncSync) tolerantFsyncSync(tempFileDescriptor, `writeFileAtomically:${filePath}`, deps.fsyncSync)
} finally { } finally {