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[PR #5571] [MERGED] fix(artifacts): report a stable symlink loop as a path resolution failure #6970
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opened 2026-11-01 21:44:24 +00:00 by bsakaguchi
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📋 Pull Request Information
Original PR: https://github.com/morluto/rea/pull/5571
Author: @kaoru0822-kitauji
Created: 10/20/2026
Status: ✅ Merged
Merged: 10/21/2026
Merged by: @kaoru0822-kitauji
Base:
main← Head:fix/artifact-symlink-loop📝 Commits (2)
0e92e2efix(artifacts): report a stable symlink loop as a path resolution failuree7950d5Merge remote-tracking branch 'origin/main' into fix/artifact-symlink-loop📊 Changes
2 files changed (+69 additions, -6 deletions)
View changed files
📝
src/application/BinaryTargetResolver.ts(+34 -6)➕
tests/acceptance/artifactSymlinkLoopCli.test.ts(+35 -0)📄 Description
What broke: a stable symlink loop in the selected path was reported as "target changed while being opened", suggesting a race instead of a bad path (#5521).
Fix:
BinaryTargetResolvertags filesystem failures by stage; ELOOP before canonicalization is a path-resolution failure, ELOOP on the canonicalO_NOFOLLOWopen stays "target changed".Risk: low; message text only, error code unchanged; the read-stage race path keeps its wording.
Summary
Fixes #5521.
inspect-artifactandextract-artifactreported a stable symbolic link loop in the selected path astarget changed while being opened: ELOOP ..., which is not true: nothing changed. They now reporttarget path could not be resolved: too many symbolic links or a symbolic link loop: ELOOP .... The structured code, category and retryability stay the same (target_unavailable,unavailable,retryable: false).Problem and expected behavior
How to trigger it:
ln -s loop.db loop.db; rea inspect-artifact loop.db --json, or selecttree/filewithtree -> tree.parseBinaryTargetfails at the firstaccesscall, before canonicalization or any open. It then sends the error throughclassifyBinaryTargetFilesystemFailure, which maps everyELOOPto "target changed while being opened". That wording only fitsELOOPfrom opening the canonical path withO_NOFOLLOW, where a symbolic link showing up means the path changed afterrealpath.Change and scope
BinaryTargetResolverowns this mapping and knows which stage failed, so the fix is there.parseBinaryTargettracks whether the failure came while resolving the caller-selected path (access/realpath) or after canonicalization. Only the resolve stage gets the newELOOPreason. The exportedclassifyBinaryTargetFilesystemFailureis still the read-stage classifier, which keeps "changed" for its existing consumers. Those areManagedSnapshotandManagedMemberComparisonService, and both read a path that was already resolved. Genuine replacement detection is unchanged.Scope: an ordinary fix inside existing boundaries. No maintainer scope decision is needed.
Contract and boundary impact
Semantic owner and earliest changed stage:
src/application/BinaryTargetResolver.ts, initial target resolution.Contribution scope fit and linked maintainer decision: not applicable (wording fix inside the existing error contract).
CLI and MCP/tool-catalog contract: only the
reason/message/remediation.actiontext for anELOOPduring resolution changes. No schema or code changes.Provider, bridge, target-format, or platform compatibility: none.
Evidence, artifact, provenance, or reconstruction contract: none. The selected path and the ELOOP diagnostic are kept.
Target selection, authority, upstream behavior, and cleanup details: unchanged.
Generated metadata, package, or installation impact: none.
Read existing files or captured data.
Evidence and regression coverage
Tests added or updated:
tests/acceptance/artifactSymlinkLoopCli.test.tsruns the public CLI. It coversinspect-artifacton a self-loop andextract-artifacton a looping directory component. It checks the code, category, retryability, selected path and the new reason, and that both links still have their original targets. It is skipped on Windows.Base reproduction: I put
BinaryTargetResolver.tsback toorigin/mainand both new tests failed, withreason: "target changed while being opened: ELOOP: too many symbolic links encountered, access '<path>'". With the fix, both pass.User-visible CLI output (macOS):
"reason": "target path could not be resolved: too many symbolic links or a symbolic link loop: ELOOP: too many symbolic links encountered, access '<path>'"Remaining proof gaps: MCP was not exercised directly. It uses the same shared resolver, but I did not run it. Linux and Windows were not run locally. The read-stage (
O_NOFOLLOW) "changed" path has no new test.Observed, derived, and inferred claims remain distinguishable.
Artifact identity, source provenance, and failed attempts remain preserved.
Unsupported, incomplete, unavailable, or uncertain outcomes remain visible.
Validation performed
npm run test:focused -- tests/acceptance/artifactSymlinkLoopCli.test.tswith the source fix reverted: 2 failed, as expectednpm run test:focused -- tests/acceptance/artifactSymlinkLoopCli.test.ts tests/acceptance/emptyTargetPathCli.test.ts tests/boundary/providers/native/artifactProvider.failureDetail.test.ts tests/boundary/providers/managed/managedMemberComparison.test.ts: 4 files, 36 tests passednpm run check:fast: typecheck and lint passedCompatibility, safety, and release
access/realpath.Author readiness
Human owner: @kaoru0822-kitauji
Before merge
type(scope): outcome.🤖 Generated with Claude Code
🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.