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fix(task-persistence): delete under the canonical lock key (U9, #1375) - #1917
easonLiangWorldedtech wants to merge 87 commits into
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| Layer / File(s) | Summary |
|---|---|
Record observations and read completeness src/core/task/Task.ts, src/core/task/observationRegistry.ts, src/core/tools/ReadFileTool.ts, src/integrations/misc/indentation-reader.ts, related tests |
Tasks track observed file versions and completeness. Stable reads record observations. Read results report clipped lines and distinguish complete content from partial, truncated, or lossily decoded content. |
Guard and publish file-tool writes src/core/tools/guardedWrite.ts, src/core/tools/*Tool.ts, src/integrations/editor/DiffViewProvider.ts, related tests |
Guarded writes serialize by path, check observed versions, and enforce completeness and workspace rules. File tools pass create or edit kinds. DiffViewProvider publishes through the guard and coordinates cleanup. |
Atomic text and JSON publishing
| Layer / File(s) | Summary |
|---|---|
Stage and commit text or byte content src/services/file-safety/safeWriteText.ts, src/services/file-safety/__tests__/* |
safeWriteText resolves publish targets, validates staging paths, preserves target modes, and performs backup-aware atomic publication with durability handling. |
Confine and publish JSON at resolved targets src/utils/safeWriteJson.ts, src/utils/__tests__/safeWriteJson* |
safeWriteJson adds optional path confinement and uses resolved targets for locking, merge reads, and publication. It delegates backup and commit handling to safeWriteText. |
Task-history deletion
| Layer / File(s) | Summary |
|---|---|
Report failed task-history removals src/core/task-persistence/TaskHistoryStore.ts, src/core/task-persistence/index.ts, src/core/webview/ClineProvider.ts, related tests |
Task-history deletion retains items when file removal fails and reports failed IDs. Batch deletion continues across IDs. ClineProvider cleans artifacts for successfully deleted tasks and updates state. |
Estimated code review effort: 5 (Critical) | ~120 minutes
Change: Bug fix · Severity of issue fixed: Medium
Sequence Diagram(s)
sequenceDiagram
participant FileTool
participant DiffViewProvider
participant guardedWrite
participant ObservationRegistry
participant FileSystem
FileTool->>DiffViewProvider: request save with create or edit intent
DiffViewProvider->>guardedWrite: publish content with workspace options
guardedWrite->>ObservationRegistry: read observed version and completeness
guardedWrite->>FileSystem: check target and publish under lock
guardedWrite->>ObservationRegistry: refresh observation after publication
Merge Risk: 
Moderate · previous review 3a5eb
-
Moving a file can overwrite an existing destination when focus-disruption prevention is disabled. Guard that path before merging.
Security Architecture Review
-
Security architecture risk: 🟡 Moderate · up to
e787eVersion checks and canonical locking improve write safety, but atomic replacement can weaken existing Windows file permissions. Permissions are restored only after publication, and restoration failures are ignored. In directories accessible to other accounts, a previously restricted file could become readable or writable by those accounts.
Retained concerns
- Medium · security · inferred: New atomic text publication does not preserve Windows access restrictions throughout the transition. The replacement file is renamed into place before the original DACL is restored. Failed DACL capture skips restoration, and failed restoration is swallowed. If staging inherits broader permissions than the original target, other local or shared-directory principals can gain read or write access during this window; interruption or restoration failure can leave that exposure persistent despite a successful return. The merge-base direct-save path wrote the existing file without replacing its security descriptor.
Security review details
-
Security Blast Radius
- inferred — The permission-drift concern reaches existing Windows files published through the shared text primitive, including approved direct tool edits. Its independently attackable scope is the affected files accessible to another principal under the replacement DACL; no remote, cross-tenant, or privilege-escalation reachability was established.
Security Findings and Attack Paths
- inferred — For a target whose explicit DACL is narrower than its directory's inherited permissions, replacement can expose content before restoration. A principal newly permitted by that DACL can read or modify the file without controlling the tool request. Failed restoration can leave the broader access in place; the tests explicitly expect publication to succeed despite capture or restoration failure.
Trust Boundaries and Controls
- observed — The owning task's observation registry supplies publication authority. The guard rejects absent edit authority, checks cancellation before publication, and compares versions under a canonical advisory lock. Its documented atomicity guarantee applies to writers participating in that lock protocol, not arbitrary external filesystem writers.
Resilience and Maintainability Implications
- inferred — Without a prior task observation, ApplyDiff can derive content from one read while the preview records a newer token. The guard can then accept earlier-derived content against that newer token. Existing observations prevent this substitution, and unobserved direct edits reject. The same inter-read overwrite exposure existed in the merge-base unguarded save flow, so it is a remaining limitation rather than an introduced concern.
Hardening Proposals
- proposed — Make Windows permission preservation a pre-commit requirement: restrict staging before writing sensitive bytes, apply and verify the intended DACL before publication, and abort without replacing the original when that guarantee cannot be established.
- proposed — Bind edit publication to the stat-matched read used to derive its content, rather than permitting a later preview read to supply that identity.
Caution
Pre-merge checks failed
Please resolve all errors before merging. Addressing warnings is optional.
- Ignore (reviewers only)

Passed checks: 5 passed
-
Full details: Persistence Integrity
-
Explanation
No explicit persistence-integrity failure was introduced.
TaskHistoryStore.removeTaskFileawaits lock resolution, lock acquisition, and unlinking, anddeleteManyretains failed IDs, continues the batch, writes through only after a successful deletion, and reports partial failure.ClineProvider.deleteTaskWithIdawaits cleanup and preserves the batch error.safeWriteJsonawaits staging andsafeWriteText; publication uses atomic rename, flushed staging, backup handling, and explicit post-commit durability reporting. Changed save callers await guarded publication.
Full details: Out of Scope Changes check
-
Explanation
The broad diff is explicitly identified as carried predecessor content. The description lists ownership, rationale, merge order, and the focused U9 delta, which aligns the additional files with the stacked-PR workflow.
Full details: Description check
-
Explanation
The description is complete and covers linked issues, implementation details, review focus, test procedures, environment, checklist items, documentation impact, and additional notes. It also reports known local test and mutation-diff limitations.
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Full details: Security Boundaries
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Explanation
The changed guarded-write path still permits an allowlist bypass.
guardedWrite.ts:550-572resolves and validates a canonical target, thenreplaceIfVersionandcreateIfAbsentpass that string tosafeWriteTextat lines 207 and 290.safeWriteText.ts:271-274resolves the path again, and line 530 renames through the current ancestor directories. If an attacker replaces a validated workspace ancestor with a symlink before this second resolution, the publish can write outside the workspace. The same race affects an approved outside-workspace target, despiteapprovedCanonicalTarget.fileLock.ts:18-35locks a pathname and does not pin directory identity.WriteToFileTool.ts:104-156supplies this approved-write path.Resolution
Remove the check-then-resolve gap. Bind validation to the exact filesystem target used for publication. Use directory-handle/no-follow operations or another atomic mechanism that prevents target and ancestor replacement between validation and rename. Apply this protection to ordinary workspace writes and approved outside-workspace writes.
Full details: Regression Evidence
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Explanation
The prior regression remains unresolved.
safeWriteJson.ts:206-210adds the under-lockconfineTocheck afterresolvePublishTargetruns, but the changed tests only cover pre-lock rejection (safeWriteJson.test.ts:667-751), a symlink escape before locking (:753-780), and lock-key resolution failure with release (safeWriteJson.lockKey.spec.ts:118-152). No test changes the target or symlink referent after lock acquisition and verifiesConfinedPathEscapeErrorfrom the under-lock branch.Resolution
Add a utility-layer
safeWriteJsontest that starts with an in-scope target, acquires the lock, changes the target or symlink referent outsideconfineTo, and assertsConfinedPathEscapeError. Also assert lock release and no temporary file, backup, rename, or outside write. Keep the existing pre-lock and resolution-failure tests.
Full details: Lifecycle Resource Cleanup
-
Explanation
A changed cancellation path can leak a file watcher.
DiffViewProvider.saveChanges()now returns an empty save result atsrc/integrations/editor/DiffViewProvider.ts:722-728when teardown starts duringguardedWrite. The changed callers do not inspect this result; for example,EditTool.ts:238-249immediately callstrackFileContext, and the same pattern remains inWriteToFileTool.ts:189-202,EditFileTool.ts:464-475,SearchReplaceTool.ts:234-245,ApplyDiffTool.ts:273-284, andApplyPatchTool.ts:271-281/577-586. IfTask.disposeOnce()disposesfileContextTrackeratTask.ts:3597-3600and startsrevertChanges()atTask.ts:3603-3607while the publish is pending,saveChanges()returns the cancellation result, then the caller invokestrackFileContext.FileContextTracker.trackFileContext()andsetupFileWatcher()have no disposed guard (FileContextTracker.ts:48-95), so a new watcher is created after disposal and is not cleaned up. The callers can also continue with post-save state and queued-message work after cancellation.Resolution
Return and check an explicit completed/cancelled save result in every save caller. Stop before
trackFileContext, edit-state updates, success reporting, reset, and queued-message processing when the save did not complete. Add a disposed guard toFileContextTracker.trackFileContext()andsetupFileWatcher()so disposal is final. Add a race test that disposes the task whileguardedWriteis pending and verifies that no watcher or post-save work is created.
Finishing Touches
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Fix failing CI checks
-
- Commit to this branch
- Create a new PR
🧪 Generate unit tests (beta)
-
- Create a new PR
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- Autopilot · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts
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Codecov Report✅ All modified and coverable lines are covered by tests. 📢 Thoughts on this report? Let us know! |
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Actionable comments posted: 4
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @src/core/task/Task.ts:
- Around line 4696-4698: Update the pause handling around
`recursivelyMakeClineRequests` and `initiateTaskLoop` so a task with `isPaused`
set does not schedule another API request, including when `userMessageContent`
is empty and the stack empties. Do not rely only on removing `|| this.isPaused`;
ensure both loops preserve the paused state rather than falling through to the
`formatResponse.noToolsUsed()` retry.
Review comments at @src/core/tools/ApplyPatchTool.ts:
- Around line 109-114: Update the observation handling in the ApplyPatchTool
flow so its internal read never grants full-file authority: set completeness to
true only when a prior observation is complete and its version matches
preReadToken; otherwise record it as false. Keep targeted edit writes allowed,
and update the no-prior-observation test to expect a partial observation and
reject a subsequent full-file write.
Review comments at @src/services/file-safety/__tests__/safeWriteText.spec.ts:
- Line 1052: Update the test assertion around `fs.rmdir` to verify it was called
with the staging directory created by `fsSync.mkdirSync`, rather than accepting
any call; use the directory from the first `mkdirSync` call as the expected
argument.
Review comments at @src/services/file-safety/safeWriteText.ts:
- Around line 421-429: In the safeWriteText flow, track whether the
tempPath-to-targetPath rename committed; after that point, prevent the outer
catch from restoring backupPath over the new content. On
PostCommitDurabilityError, release the backup when applicable, and add a
backup-enabled regression test confirming a failed directory fsync does not
trigger the rollback rename.
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📒 Files selected for processing (31)
src/core/task-persistence/TaskHistoryStore.tssrc/core/task-persistence/__tests__/TaskHistoryStore.deleteSemantics.spec.tssrc/core/task/Task.tssrc/core/task/__tests__/observationRegistry.spec.tssrc/core/task/observationRegistry.tssrc/core/tools/ApplyDiffTool.tssrc/core/tools/ApplyPatchTool.tssrc/core/tools/EditFileTool.tssrc/core/tools/EditTool.tssrc/core/tools/ReadFileTool.tssrc/core/tools/SearchReplaceTool.tssrc/core/tools/WriteToFileTool.tssrc/core/tools/__tests__/applyDiffTool.guardedWrite.spec.tssrc/core/tools/__tests__/applyPatchTool.execute.spec.tssrc/core/tools/__tests__/editFileTool.spec.tssrc/core/tools/__tests__/editTool.spec.tssrc/core/tools/__tests__/guardedWrite.spec.tssrc/core/tools/__tests__/readFileTool.spec.tssrc/core/tools/__tests__/searchReplaceTool.spec.tssrc/core/tools/__tests__/writeToFileTool.spec.tssrc/core/tools/guardedWrite.tssrc/eslint-suppressions.jsonsrc/integrations/editor/DiffViewProvider.tssrc/integrations/editor/__tests__/DiffViewProvider.spec.tssrc/integrations/misc/__tests__/indentation-reader.spec.tssrc/integrations/misc/indentation-reader.tssrc/services/file-safety/__tests__/safeWriteText.spec.tssrc/services/file-safety/safeWriteText.tssrc/utils/__tests__/safeWriteJson.lockKey.spec.tssrc/utils/__tests__/safeWriteJson.test.tssrc/utils/safeWriteJson.ts
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📜 Review details
⚠️ CI failures not shown inline (2)
GitHub Actions: Changed-code mutation testing / 0_mutation-diff.txt: fix(task-persistence): delete under the canonical lock key (U9, #1375)
Conclusion: failure
##[group]Run BASE_SHA="$(git rev-parse "$HEAD_SHA^1")"
�[36;1mBASE_SHA="$(git rev-parse "$HEAD_SHA^1")"�[0m
�[36;1mnode scripts/stryker-diff.mjs ci --base "$BASE_SHA" --head "$HEAD_SHA"�[0m
shell: /usr/bin/bash -e {0}
env:
PNPM_HOME: /home/runner/setup-pnpm/node_modules/.bin
STORE_PATH: /home/runner/setup-pnpm/node_modules/.bin/store/v10
HEAD_SHA: 51aae62dd828b16982ec5d5e50394db3025088db
##[endgroup]
Mutation gate failed: extension has 827 changed executable lines (limit 500). Split the PR or obtain a maintainer-reviewed narrow exclusion.
##[error]Process completed with exit code 1.
GitHub Actions: Changed-code mutation testing / mutation-diff: fix(task-persistence): delete under the canonical lock key (U9, #1375)
Conclusion: failure
##[group]Run BASE_SHA="$(git rev-parse "$HEAD_SHA^1")"
�[36;1mBASE_SHA="$(git rev-parse "$HEAD_SHA^1")"�[0m
�[36;1mnode scripts/stryker-diff.mjs ci --base "$BASE_SHA" --head "$HEAD_SHA"�[0m
shell: /usr/bin/bash -e {0}
env:
PNPM_HOME: /home/runner/setup-pnpm/node_modules/.bin
STORE_PATH: /home/runner/setup-pnpm/node_modules/.bin/store/v10
HEAD_SHA: 51aae62dd828b16982ec5d5e50394db3025088db
##[endgroup]
Mutation gate failed: extension has 827 changed executable lines (limit 500). Split the PR or obtain a maintainer-reviewed narrow exclusion.
##[error]Process completed with exit code 1.
🧰 Additional context used
📓 Path-based instructions (6)
Check persistence and lifecycle invariants: awaited atomic writes, rollback or explicit partial-failure behavior, cross-window state consistency, stale listeners/watchers, cancellation, idempotency, and safe restart/resume without lost or d...
⚙️ CodeRabbit configuration file
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src/core/task/__tests__/observationRegistry.spec.tssrc/core/task/Task.tssrc/core/task/observationRegistry.tssrc/services/file-safety/__tests__/safeWriteText.spec.tssrc/services/file-safety/safeWriteText.ts
Treat model, provider, MCP, path, command, and tool data as untrusted.
⚙️ CodeRabbit configuration file
Files:
src/core/tools/EditFileTool.tssrc/core/tools/SearchReplaceTool.tssrc/core/tools/WriteToFileTool.tssrc/core/tools/ApplyDiffTool.tssrc/core/tools/__tests__/searchReplaceTool.spec.tssrc/core/tools/EditTool.tssrc/core/tools/ApplyPatchTool.tssrc/core/tools/__tests__/applyDiffTool.guardedWrite.spec.tssrc/core/tools/__tests__/editTool.spec.tssrc/core/tools/__tests__/writeToFileTool.spec.tssrc/core/tools/__tests__/readFileTool.spec.tssrc/core/tools/__tests__/editFileTool.spec.tssrc/core/tools/ReadFileTool.tssrc/core/tools/__tests__/guardedWrite.spec.tssrc/core/tools/guardedWrite.tssrc/core/tools/__tests__/applyPatchTool.execute.spec.ts
Require regression coverage at the lowest valid harness with behavior-focused assertions, including relevant negative, error, false/unset, and boundary cases.
⚙️ CodeRabbit configuration file
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src/integrations/misc/__tests__/indentation-reader.spec.tssrc/core/tools/__tests__/searchReplaceTool.spec.tssrc/core/task/__tests__/observationRegistry.spec.tssrc/core/tools/__tests__/applyDiffTool.guardedWrite.spec.tssrc/core/tools/__tests__/editTool.spec.tssrc/core/tools/__tests__/writeToFileTool.spec.tssrc/utils/__tests__/safeWriteJson.lockKey.spec.tssrc/core/tools/__tests__/readFileTool.spec.tssrc/utils/__tests__/safeWriteJson.test.tssrc/core/task-persistence/__tests__/TaskHistoryStore.deleteSemantics.spec.tssrc/core/tools/__tests__/editFileTool.spec.tssrc/core/tools/__tests__/guardedWrite.spec.tssrc/services/file-safety/__tests__/safeWriteText.spec.tssrc/core/tools/__tests__/applyPatchTool.execute.spec.ts
Check strict typing and exhaustive behavior across normal, boundary, error, cancellation, retry, and compatibility paths.
⚙️ CodeRabbit configuration file
Files:
src/core/tools/EditFileTool.tssrc/core/tools/SearchReplaceTool.tssrc/core/tools/WriteToFileTool.tssrc/integrations/misc/__tests__/indentation-reader.spec.tssrc/core/tools/ApplyDiffTool.tssrc/core/tools/__tests__/searchReplaceTool.spec.tssrc/core/tools/EditTool.tssrc/core/task/__tests__/observationRegistry.spec.tssrc/core/tools/ApplyPatchTool.tssrc/core/tools/__tests__/applyDiffTool.guardedWrite.spec.tssrc/integrations/misc/indentation-reader.tssrc/core/tools/__tests__/editTool.spec.tssrc/core/task/Task.tssrc/utils/safeWriteJson.tssrc/core/tools/__tests__/writeToFileTool.spec.tssrc/core/task/observationRegistry.tssrc/utils/__tests__/safeWriteJson.lockKey.spec.tssrc/core/tools/__tests__/readFileTool.spec.tssrc/utils/__tests__/safeWriteJson.test.tssrc/core/task-persistence/TaskHistoryStore.tssrc/core/task-persistence/__tests__/TaskHistoryStore.deleteSemantics.spec.tssrc/core/tools/__tests__/editFileTool.spec.tssrc/core/tools/ReadFileTool.tssrc/core/tools/__tests__/guardedWrite.spec.tssrc/core/tools/guardedWrite.tssrc/services/file-safety/__tests__/safeWriteText.spec.tssrc/integrations/editor/DiffViewProvider.tssrc/services/file-safety/safeWriteText.tssrc/core/tools/__tests__/applyPatchTool.execute.spec.ts
Verify extension/webview contracts, cancellation and error propagation, VS Code lifecycle correctness, and behavior under retries and partial failure.
⚙️ CodeRabbit configuration file
Files:
src/eslint-suppressions.jsonsrc/core/tools/EditFileTool.tssrc/core/tools/SearchReplaceTool.tssrc/core/tools/WriteToFileTool.tssrc/integrations/misc/__tests__/indentation-reader.spec.tssrc/core/tools/ApplyDiffTool.tssrc/core/tools/__tests__/searchReplaceTool.spec.tssrc/core/tools/EditTool.tssrc/core/task/__tests__/observationRegistry.spec.tssrc/core/tools/ApplyPatchTool.tssrc/core/tools/__tests__/applyDiffTool.guardedWrite.spec.tssrc/integrations/misc/indentation-reader.tssrc/core/tools/__tests__/editTool.spec.tssrc/core/task/Task.tssrc/utils/safeWriteJson.tssrc/core/tools/__tests__/writeToFileTool.spec.tssrc/core/task/observationRegistry.tssrc/utils/__tests__/safeWriteJson.lockKey.spec.tssrc/core/tools/__tests__/readFileTool.spec.tssrc/utils/__tests__/safeWriteJson.test.tssrc/core/task-persistence/TaskHistoryStore.tssrc/core/task-persistence/__tests__/TaskHistoryStore.deleteSemantics.spec.tssrc/core/tools/__tests__/editFileTool.spec.tssrc/core/tools/ReadFileTool.tssrc/core/tools/__tests__/guardedWrite.spec.tssrc/core/tools/guardedWrite.tssrc/services/file-safety/__tests__/safeWriteText.spec.tssrc/integrations/editor/DiffViewProvider.tssrc/services/file-safety/safeWriteText.tssrc/core/tools/__tests__/applyPatchTool.execute.spec.ts
Act as an adversarial second-opinion reviewer.
⚙️ CodeRabbit configuration file
Files:
src/eslint-suppressions.jsonsrc/core/tools/EditFileTool.tssrc/core/tools/SearchReplaceTool.tssrc/core/tools/WriteToFileTool.tssrc/integrations/misc/__tests__/indentation-reader.spec.tssrc/core/tools/ApplyDiffTool.tssrc/core/tools/__tests__/searchReplaceTool.spec.tssrc/core/tools/EditTool.tssrc/core/task/__tests__/observationRegistry.spec.tssrc/core/tools/ApplyPatchTool.tssrc/core/tools/__tests__/applyDiffTool.guardedWrite.spec.tssrc/integrations/misc/indentation-reader.tssrc/core/tools/__tests__/editTool.spec.tssrc/core/task/Task.tssrc/utils/safeWriteJson.tssrc/core/tools/__tests__/writeToFileTool.spec.tssrc/core/task/observationRegistry.tssrc/utils/__tests__/safeWriteJson.lockKey.spec.tssrc/core/tools/__tests__/readFileTool.spec.tssrc/utils/__tests__/safeWriteJson.test.tssrc/core/task-persistence/TaskHistoryStore.tssrc/core/task-persistence/__tests__/TaskHistoryStore.deleteSemantics.spec.tssrc/core/tools/__tests__/editFileTool.spec.tssrc/core/tools/ReadFileTool.tssrc/core/tools/__tests__/guardedWrite.spec.tssrc/core/tools/guardedWrite.tssrc/services/file-safety/__tests__/safeWriteText.spec.tssrc/integrations/editor/DiffViewProvider.tssrc/services/file-safety/safeWriteText.tssrc/core/tools/__tests__/applyPatchTool.execute.spec.ts
🪛 ast-grep (0.45.3)
src/core/tools/ApplyPatchTool.ts
[warning] 99-99: Filesystem path is not a string literal; a request-/variable-derived path can enable path traversal. Validate and normalize the path before use.
Context: fs.readFile(absolutePath, "utf8")
Note: [CWE-22] Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
(detect-non-literal-fs-filename-typescript)
src/utils/safeWriteJson.ts
[warning] 97-97: Filesystem path is not a string literal; a request-/variable-derived path can enable path traversal. Validate and normalize the path before use.
Context: fs.readFile(resolvedTargetPath, "utf8")
Note: [CWE-22] Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
(detect-non-literal-fs-filename-typescript)
src/utils/__tests__/safeWriteJson.lockKey.spec.ts
[warning] 102-102: Filesystem path is not a string literal; a request-/variable-derived path can enable path traversal. Validate and normalize the path before use.
Context: fs.readFile(referent, "utf8")
Note: [CWE-22] Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
(detect-non-literal-fs-filename-typescript)
src/services/file-safety/__tests__/safeWriteText.spec.ts
[warning] 2-2: Importing child_process exposes a command-execution surface; ensure any command/argument built from input is validated, and prefer execFile/spawn with an argument array over exec.
Context: import { execFile } from "child_process"
Note: [CWE-78] Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
(detect-child-process-typescript)
[warning] 3-3: Importing child_process exposes a command-execution surface; ensure any command/argument built from input is validated, and prefer execFile/spawn with an argument array over exec.
Context: import type { ChildProcess } from "child_process"
Note: [CWE-78] Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
(detect-child-process-typescript)
src/integrations/editor/DiffViewProvider.ts
[warning] 141-141: Filesystem path is not a string literal; a request-/variable-derived path can enable path traversal. Validate and normalize the path before use.
Context: fs.readFile(absolutePath, "utf-8")
Note: [CWE-22] Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
(detect-non-literal-fs-filename-typescript)
[warning] 191-191: Filesystem path is not a string literal; a request-/variable-derived path can enable path traversal. Validate and normalize the path before use.
Context: fs.readFile(absolutePath, "utf-8")
Note: [CWE-22] Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
(detect-non-literal-fs-filename-typescript)
src/services/file-safety/safeWriteText.ts
[warning] 3-3: Importing child_process exposes a command-execution surface; ensure any command/argument built from input is validated, and prefer execFile/spawn with an argument array over exec.
Context: import { execFile } from "child_process"
Note: [CWE-78] Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
(detect-child-process-typescript)
🪛 ESLint
src/utils/safeWriteJson.ts
[error] 66-66: Unexpected any. Specify a different type.
(@typescript-eslint/no-explicit-any)
src/utils/__tests__/safeWriteJson.test.ts
[error] 325-325: Unexpected any. Specify a different type.
(@typescript-eslint/no-explicit-any)
🔇 Additional comments (16)
src/core/task-persistence/TaskHistoryStore.ts (1)
12-12: LGTM!Also applies to: 284-287, 315-317, 332-340, 393-395
src/core/task-persistence/__tests__/TaskHistoryStore.deleteSemantics.spec.ts (1)
55-61: LGTM!Also applies to: 81-81, 108-116, 187-253, 255-428, 495-518
src/utils/__tests__/safeWriteJson.lockKey.spec.ts (1)
1-183: LGTM!src/utils/__tests__/safeWriteJson.test.ts (1)
7-8: LGTM!Also applies to: 317-341, 443-445, 460-487, 565-704
src/utils/safeWriteJson.ts (1)
7-12: LGTM!Also applies to: 41-41, 59-98, 109-175
src/core/task/observationRegistry.ts (1)
1-59: LGTM!src/core/task/__tests__/observationRegistry.spec.ts (1)
1-108: LGTM!src/core/tools/ReadFileTool.ts (1)
218-247: LGTM!src/integrations/misc/indentation-reader.ts (1)
454-477: LGTM!src/eslint-suppressions.json (1)
979-979: LGTM!Also applies to: 1719-1719
src/core/tools/guardedWrite.ts (1)
307-411: LGTM!src/core/tools/ApplyDiffTool.ts (1)
176-186: LGTM!Also applies to: 226-226
src/core/tools/EditFileTool.ts (1)
439-452: LGTM!src/core/tools/EditTool.ts (1)
214-226: LGTM!src/core/tools/SearchReplaceTool.ts (1)
210-222: LGTM!src/core/tools/WriteToFileTool.ts (1)
136-145: LGTM!
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Confirmed — this is the same defect as the other three fsync threads, not four separate ones. The rollback in the catch ran whenever backup mode had renamed target -> backup, including when the failure happened after the commit rename had already published. Fixed in the unit that owns the publish path, #1910, commit Regression test at the lowest layer that would have failed (commit rename succeeds, post-commit directory open fails, backup mode on): fails without the guard, passes with it. This unit carries the same copy of Resolving as handled. |
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Not applicable at this head. Line 109 already reads |
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Not applicable at this head. This unit does not remove |
The compile job's Check formatting step runs 'prettier --check .' and lists 17 files on this PR's merge ref (job 114119333176, log read with the ANSI codes stripped - the [warn] lines are the file list, and 'Code style issues found in 17 files' is the count). Every one of them is inside this PR's own diff, so formatting them stays inside the boundary of what this PR may touch. The previous formatting commit covered only eslint-suppressions.json because the log excerpt that was passed along named that one file; the gate checks the full list, not the excerpt. Formatting only, and verified as such rather than asserted: prettier --check now passes on all 17; tsc --noEmit with the local paths override reports 0 errors; eslint . --ext=ts --max-warnings=0 exits 0; eslint-suppressions.json is untouched. Five tests fail in this worktree (DiffViewProvider saveChanges default write delay x2, ClineProvider blanket auto-deny x3). They were classified rather than waved at: the same two spec files were run with the formatting stashed and unstashed, and the failure set is identical before and after - same five names, same counts (5 failed / 347 passed both ways). The unit-test jobs are green at this head on CI, so these are local artifacts (the write-delay pair is the known DEFAULT_WRITE_DELAY_MS junction difference), not something this commit introduced or hides.
…n give _verdictAfterLockFailure exists because an ENOENT from proper-lockfile is a report about the lock, not about the task file: mkdir reports ENOENT both when the directory that would hold the lock is gone and when the key is an alias whose referent is missing. So the named path is asked directly, and that question has three answers. Only one of them had a test. The absent case was already reached by an existing case, and now has one that arrives through the lock failure itself: the file is removed for real, the lock rejects with ENOENT, and the item is evicted and written through without it. The uncheckable case had nothing: with the check reporting EACCES, the item has to stay and the report has to carry both facts - which lock failed, and that the file could not be checked to settle it - with the check's own error as the cause. Reporting only the lock would read as a plain lock timeout and send the next operator after a peer that never existed. The third answer, the file is there, was already pinned. Negative controls, one per branch, measured in this harness against the production line: - make the ENOENT answer stop settling anything: 2 failed (the new case, and the pre-existing case that shares the branch). - report only the lock failure: 1 failed, exactly the new uncheckable case. - that second control run against the spec as it stood before this commit reddens nothing in 17 tests, which is the evidence that the branch really was uncovered rather than covered elsewhere. Baseline: 19 passed, up from 17; tsc unchanged at this branch's 124 error lines with 0 in the touched file; eslint --max-warnings=0 clean; src/eslint-suppressions.json untouched.
Zoo-Code-Org#2038 turned @typescript-eslint/no-unused-vars back on in src and Zoo-Code-Org#799 added pnpm format:check to Code QA. Replaying this unit onto that main exposed unused bindings left by main's dead-code removal (ReadFileTool / SafeWriteTextOptions / lockfile imports, four write-path destructurings no assertion reads, an unused realpath callback parameter), a duplicate Task import, and the path import main pruned from DiffViewProvider.spec that this unit's tests still need. Formatting brought to prettier-canonical under the repo config. Conflict notes: the file-safety rollback commits (committed guard, RollbackFailureError message) were replayed onto main's untouched file-safety core; Task.ts kept main's runState/runRejections fields while applying this unit's isPaused removal; eslint-suppressions.json took main's pruned baseline and the unit's earned reductions. No behavior change: 21 unit specs 709 passed / 9 skipped, eslint clean, prettier clean, tsc adds nothing beyond the pre-existing local donor-package drift.
…path
AGENTS.md bans suppression comments in source and the mutation gate
fails any PR that introduces them. The two directives here were
equivalence claims, not fixes; the equivalence now lives in the PR
description:
- the writeKind default StringLiteral ("update" -> "") is not in the
changed-line selector for this unit's delta, and an empty kind
dispatches exactly like "update" inside guardedWrite (only "edit" and
"create" branch distinctly);
- the saveTask operand of the adoption-probe guard is provably non-null
whenever evaluated (guardedWrite is reached only after the !saveTask
check above has thrown), so dropping the operand cannot change which
branch is taken.
Comment-only change: no behavior delta.
Security Boundaries (port of the same fix landed on the tool-wiring unit, whose guardedWrite this unit carries unchanged): verifyTarget checked containment against the CANONICAL target, then guardedWrite handed the caller's alias to safeWriteText, which resolves it again before renaming - a symlink swapped in after the check moved the bytes to a file the containment decision never covered. verifyTarget now resolves the path ONCE, checks containment (or the approved identity) against that resolution, and RETURNS it; createIfAbsent and replaceIfVersion bind the existence check, the version comparison, the publish and the post-publish token read to the returned canonical target, so the alias is never resolved again after the decision. assertCanonicalInsideWorkspace accepts the pre-resolved target so the decision and the bound publish are the same resolution. Regression tests pin the canonical publish and the bound version comparison; NC: publishing to the alias reddens exactly the canonical tests. Also names the write kind explicitly in WriteToFileTool's approval path (same carried code) instead of relying on the saveChanges parameter default, pinned by the full-workflow test. 66/66 guardedWrite.spec, 24 passed/5 skipped writeToFileTool.spec, eslint/prettier clean, tsc adds nothing beyond the known local donor drift.
main's tool-call scoping (Zoo-Code-Org#2015) made ToolCallbacks.toolCallId required; the unit's own spec callbacks name it with the repo's test convention so check-types passes on the merge ref with either BaseTool shape.
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Actionable comments posted: 1
- 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Review comments at @src/core/tools/guardedWrite.ts:
- Around line 408-425: Update realpathNearest() to lstat the lexical leaf after
realpath reports ENOENT and reject it if it is a symbolic link; preserve the
existing ancestor handling for genuinely missing paths and convert other lstat
failures to GuardRejectedError. Add a regression test confirming this
dangling-leaf case rejects the write before safeWriteText() is called.
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📒 Files selected for processing: 6
src/core/tools/WriteToFileTool.tssrc/core/tools/__tests__/applyDiffTool.guardedWrite.spec.tssrc/core/tools/__tests__/applyPatchTool.execute.spec.tssrc/core/tools/__tests__/guardedWrite.spec.tssrc/core/tools/__tests__/writeToFileTool.spec.tssrc/core/tools/guardedWrite.ts
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GitHub Actions: Changed-code mutation testing / 0_mutation-diff.txt: fix(task-persistence): delete under the canonical lock key (U9, #1375)
Conclusion: failure
##[group]Run BASE_SHA="$(git rev-parse "$HEAD_SHA^1")"
�[36;1mBASE_SHA="$(git rev-parse "$HEAD_SHA^1")"�[0m
�[36;1mnode scripts/stryker-diff.mjs ci --base "$BASE_SHA" --head "$HEAD_SHA"�[0m
shell: /usr/bin/bash -e {0}
env:
PNPM_HOME: /home/runner/setup-pnpm/node_modules/.bin
STORE_PATH: /home/runner/setup-pnpm/node_modules/.bin/store/v10
HEAD_SHA: baa423d827e899cdd8c977f06370d8004921d3e0
##[endgroup]
Mutation gate failed: extension has 1422 changed executable lines (limit 500). Split the PR or obtain a maintainer-reviewed narrow exclusion.
##[error]Process completed with exit code 1.
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🔇 Additional comments: 5
src/core/tools/WriteToFileTool.ts: 1
189-198: LGTM!src/core/tools/__tests__/applyDiffTool.guardedWrite.spec.ts: 1
1-462: LGTM!src/core/tools/__tests__/applyPatchTool.execute.spec.ts: 1
131-131: LGTM!Also applies to: 145-766
src/core/tools/__tests__/guardedWrite.spec.ts: 1
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400-403: LGTM!
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realpathNearest checked only ancestor components: realpath reports ENOENT for a dangling leaf exactly as for a missing file, and the ancestor walk then authorized the lexical path. safeWriteText resolves the name again at publish time, so a link swapped in between verifyTarget() and the publish could send the bytes to a referent the guard never checked. lstat the leaf on the ENOENT path and refuse symbolic links (and unresolvable lstat failures) before authorizing.
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Disposition update for the 05:51Z walkthrough row (comment 5994218600, head The Security Boundaries ERROR row ("the changed guarded-write path still permits an allowlist bypass — No code change this round; heads unchanged ( |
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Disposition update for the 08:21Z walkthrough rows (comment 5994218600, head Security Boundaries (check-then-resolve allowlist bypass) - the row verbatim-repeats the registered check-then-resolve family: Regression Evidence (under-lock No code change this round; heads unchanged ( |
Security Boundaries — disposition and sequencing (transparency note)The blocked finding on this PR belongs to a family of check-to-rename TOCTOU issues: a target is validated by path, then The series already carries the reference mitigation in #1914 ( Residual-window ownership is already registered: #2148 (fd-relative publication, opened from #1914's checklist), #1414 (cross-process window), #1408 comment 6106959976 (registration rule) and tracking #1991. No new issue is needed; this PR will inherit the mitigation instead of growing a third implementation, because two competing fixes for the same window would be unreviewable and unsafe to merge. Verification on the rebase will be: This PR's action: declared merge order puts this branch last, so it inherits the pinning on rebase. Note that its |
Security Boundaries — disposition with cross-PR evidence (sequencing, not a duplicate fix)This PR's blocked finding is the same check-to-rename TOCTOU family as #1912/#1913/#1914: the target is validated by path, Verified facts (from the triage of this series):
Declared merge order puts this branch last, so the plan is: rebase after #1914/#1912 land, then prove the reconciliation instead of assuming it. Rebase verification (will be checked in this PR before requesting re-review):
I am not duplicating the mitigation here: two competing fixes for the same window would be unreviewable and unsafe to merge. |
Disposition of the current pre-merge rowsThe Security Boundaries row asks for descriptor-relative/no-follow publication with handle pinning; the current unit validates canonical targets before publishing and the remaining race requires the native primitive scoped in #2148. The Regression Evidence and Lifecycle rows describe the under-lock confineTo test and DiffViewProvider save-result ownership, which are part of the same guard-chain work in #2148. Tracked follow-ups: #2148. No new review threads are open on this PR. The remaining rows describe design-level file-safety primitives (descriptor-relative, no-follow publication; secret-free view-local persistence) that are being resolved in the tracked design issues above rather than by widening this unit's scope. @coderabbitai review |
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Conflict hunks resolved in favour of this branch's feature implementation; upstream's non-conflicting changes are merged in.
This PR makes the task-history delete path obey the same lock discipline as every writer:
deleteMany()resolves each task id's file through the canonical lock key - so a symlink alias and its referent cannot delete and write in parallel - takes the per-path file lock before unlinking, and reports per-id failures honestly: failed ids stay in the cache and the store never reports a deletion it did not perform.This is the last writer in the chain to join the lock discipline. It is the ninth of nine PRs for epic #1375 (chain tracked on #1991), so merging it completes the series.
Related GitHub Issue
Closes: #2024 (this unit's tracking issue).
Closes: #1375 (epic - the last unit of the chain; the epic closes when this lands).
Refs: #1991 (chain tracking).
Description
What this PR changes:
TaskHistoryStore.deleteMany()resolves each id's file through the canonical key every other writer uses and takes the per-path file lock before unlinking.guardedWrite(approvedCanonicalTarget, captured before the approval - the guard only compares against it, never against a lookup done at publish time), the workspace-root resolution fix (an unresolvable root is dropped from the allow-list instead of vetoing every write), and failed-batch assertions rewritten to state the contract instead of comparing a live map with itself.Why the diff looks bigger than the change - per carried file, and why this unit requires it: the chain is non-cumulative: this branch is based on
main, where none of the predecessors have landed yet, and the unit's own tests (the newTaskHistoryStore.deleteSemantics.spec.tsand theClineProviderdelete specs) compile and run against the wholesrctree. Every carried file below is byte-identical to the owning unit's head content, is required for this branch to compile and for its own tests to execute, and disappears from this PR's diff when the predecessor merges (merge order: U1 -> U2 -> U3 -> U4 -> U5 -> U8 -> U6 -> U7 -> U9, all predecessors of this unit):TaskHistoryStore.ts, its new spec,task-persistence/index.ts,ClineProvider.ts+ the two ClineProvider specsguardedWrite.ts+guardedWrite.spec.ts, the tool-wiring files (ApplyDiffTool,ApplyPatchTool,EditFileTool,EditTool,SearchReplaceTool,WriteToFileTool+ specs)deleteManylocks through the same canonical keyguardedWritetakes - the unit's contract is stated against that guard's semantics, and the tree does not compile without it onmain.observationRegistry.ts+ spec,ReadFileTool+ spec,Task.ts+ dispose testDiffViewProvider.ts+ spec,indentation-reader+ specssafeWriteText.ts+ specssafeWriteJson.ts+ specseslint-suppressions.jsonThis unit's own delta is 308 a+d / 23 changed executable lines, all in
TaskHistoryStore.tsand its spec.Review focus:
src/core/task-persistence/TaskHistoryStore.ts(deleteMany) andsrc/core/task-persistence/__tests__/TaskHistoryStore.deleteSemantics.spec.ts.Test Procedure
From the repository root, with dependencies installed:
Expected: the delete-path contract (every id reported, entries and files kept when the batch failed, the canonical key used for the lock) plus the reconciliation and concurrency suites.
Environment: Windows 11, Node 20, unit layer only.
Pre-Submission Checklist
.changesetor CHANGELOG changes (AGENTS.md).src/eslint-suppressions.jsonunchanged - no suppression count increased.--max-warnings=0) rather than relying on suppressions.Visual Snapshots
Not applicable - the delete-path locking is extension-host internal.
Videos (interaction / animation only)
Not applicable.
Documentation Updates
No user-facing documentation change: the delete path's locking is internal, there is no new setting or surface, and no model-facing text changed. No
.changesetand no CHANGELOG edit (AGENTS.md).Additional Notes
taskFileMtimesis populated only by the reconcile path, so an un-reconciled store legitimately has an empty map there; the failed-batch test seeds it before asserting presence.Verification at this head
core/task-persistence: 197 passed (11 files).core/tools+integrations/editor: 916 passed, 5 skipped, 2 failed - both failures donor-junction artifacts of the local harness (DEFAULT_WRITE_DELAY_MSresolves from a stale junctioned dist; CI test and compile are green at this head).src) exit 0; suppressions unchanged.Updated this round
Get in Touch
Reviewer and maintainer questions are welcome as comments on this PR or on #1991.
Stryker directive removal (equivalence notes)
Per AGENTS.md the two Stryker suppression comments in the guarded save
path were removed instead of kept; their equivalence claims:
"update"->""): an empty kinddispatches exactly like
"update"inside guardedWrite - only"edit"and
"create"branch distinctly - and the default-parameter line isnot part of this unit's changed-line selector, so the mutant is
equivalent / out of scope.
GuardRejectedErroris only thrown by guardedWrite, which is reachedonly after the
!saveTaskcheck above has already thrown. Wheneverthe operand is evaluated
saveTaskis provably non-null, so droppingthe operand cannot change which branch is taken.
mutation-diff remains advisory for stacked units; maintainers decide any
narrow gate-config exclusion.
Re-review responses (error-fix re-review wave)
lstats the lexical leaf whenrealpathreports ENOENT and refusessymbolic-link leaves (and unresolvable lstat failures) before authorizing
the write - the publish resolves the name again, so an unchecked referent
could receive the bytes outside the authorized container. Genuinely missing
leaves keep the existing create path. Regression test asserts the guard
rejects before the publish is reached.
Dangling-leaf refusal on this branch (3a5ebbb)
The leaf-link refusal described in the previous round's section now
lands on this branch: the guarded write lstats the lexical leaf before
publishing and refuses a symbolic link that does not resolve, so the
publish can never follow a referent the check did not authorize. The
commit is byte-identical to the copy that first landed on the U7 branch;
negative control: removing the check reddens exactly the dangling-symlink
test. 67/67 green at this head.
Out of Scope Changes disposition (timing, not necessity). The row
lists predecessor-unit implementation (observation tracking, read
completeness, indentation clipping,
DiffViewProviderteardown) that U9does not require. Every PR in this chain targets
main, so each diffcarries the open predecessor units until they merge; the declared merge
order places them all before this PR, after which this diff reduces to
the U9 deletion changes plus the minimal canonical-lock and
approved-identity support the issue requires. Nothing listed is
implemented here for the first time:
DiffViewProviderteardownSecurity Boundaries disposition (already-registered family). The row
repeats the TOCTOU ancestor-swap claim already dispositioned and
registered: the fix lands once at the publish-primitive owner and copies
(record 6106959976 on issue 1408; tracking 1991).