fix: ensure chmod runs even when chown fails in rootless permission repair by lpcox · Pull Request #5766 · github/gh-aw-firewall

lpcox · 2026-07-01T18:55:35Z

Problem

In rootless Docker, the fixArtifactPermissionsForRootless() function fails to repair file permissions because chown fails due to user namespace UID remapping, and the && operator prevents the subsequent chmod from running.

Root cause: In rootless Docker, UID 1001 inside the container maps to a subordinate UID on the host (not the actual host UID 1001). So chown -R "$TUID:$TGID" /fix either fails outright or produces the wrong ownership. Because the command was joined with &&, the chmod -R a+rwX /fix (which would actually solve the problem) never executed.

This results in:

[WARN] Rootless artifact permission repair failed for /tmp/gh-aw/sandbox/firewall/logs (exit 1)
[WARN] Rootless artifact permission repair failed for /tmp/gh-aw/sandbox/firewall/audit (exit 1)
[WARN] Rootless artifact permission repair failed for /tmp/awf-...-chroot-home (exit 1)
[WARN] Failed to remove chroot home directory after permission repair: EACCES

Fix

Change && to ; so chmod -R a+rwX always runs regardless of whether chown succeeds. Also suppress chown stderr since the failure is expected in rootless mode.

- 'chown -R "$TUID:$TGID" /fix && chmod -R a+rwX /fix'
+ 'chown -R "$TUID:$TGID" /fix 2>/dev/null; chmod -R a+rwX /fix'

The chown still runs first (works in rootful Docker), but chmod always follows as a fallback (sufficient for rootless since world-readable permissions allow the host user to access files regardless of ownership).

Observed in

https://github.com/github/gh-aw/actions/runs/28487107941/job/84435983514#step:35:1

…epair In rootless Docker, chown to the host user's UID fails because of user namespace UID remapping — the target UID inside the container maps to a subordinate UID on the host, not to the actual host UID. Because the command used &&, the subsequent chmod (which would actually fix the problem by making files world-readable) never executed. Change && to ; so chmod -R a+rwX always runs regardless of whether chown succeeds. Suppress chown stderr to avoid noisy warnings since the failure is expected in rootless mode. Observed in: github/gh-aw/actions/runs/28487107941 Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

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Pull request overview

This PR fixes rootless Docker artifact permission repair by ensuring chmod still runs even when chown fails due to UID/GID remapping behavior in user namespaces. This improves cleanup reliability (e.g., deleting the chroot home directory) and avoids leaving behind unreadable/unremovable artifact directories.

Changes:

Replace chown ... && chmod ... with chown ...; chmod ... so chmod always executes.
Suppress chown stderr (2>/dev/null) to avoid expected noise in rootless scenarios.

Show a summary per file

File	Description
`src/artifact-permissions.ts`	Ensures permission repair runs `chmod` even when `chown` fails in rootless mode, improving artifact cleanup reliability.

Review details

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github-actions · 2026-07-01T18:57:37Z

✅ Coverage Check Passed

Overall Coverage

Metric	Base	PR	Delta
Lines	98.65%	98.68%	📈 +0.03%
Statements	98.53%	98.57%	📈 +0.04%
Functions	99.55%	99.55%	➡️ +0.00%
Branches	94.46%	94.46%	➡️ +0.00%

📁 Per-file Coverage Changes (1 files)

File	Lines (Before → After)	Statements (Before → After)
`src/workdir-setup.ts`	92.7% → 94.5% (+1.82%)	92.7% → 94.5% (+1.82%)

Coverage comparison generated by scripts/ci/compare-coverage.ts

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Contribution guidelines review complete for PR #5766. No important guideline issues found in the provided PR metadata, diff, and CONTRIBUTING.md context; no comment needed.

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Smoke Test: Claude Engine Validation

Check	Result
API status	✅ PASS
gh check	✅ PASS
File status	✅ PASS

Overall result: PASS

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github-actions · 2026-07-01T19:27:10Z

🔐 Smoke Test: Copilot PAT Auth — PASS

Test	Result
GitHub MCP connectivity	✅
GitHub.com HTTP	✅ 200
File write/read	⚠️ N/A (template vars unsubstituted)

PR: fix: ensure chmod runs even when chown fails in rootless permission repair
Author: @lpcox | Assignees: none
Auth mode: PAT (COPILOT_GITHUB_TOKEN)

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github-actions · 2026-07-01T19:27:28Z

Smoke Test Results

GitHub MCP Testing: ❌ (Tools not found)
GitHub.com Connectivity: ❌ (HTTP 000, SSL Error 35)
File Writing Testing: ✅
Bash Tool Testing: ✅

Overall Status: FAIL

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localhost

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github-actions · 2026-07-01T19:27:45Z

Smoke test: PASS

fix: sysroot filter should not drop workspace custom mounts ✅
fix: filter split-fs-invisible mounts when sysroot-stage is active (arc-dind) ✅
Browser title check ✅
File write/read ✅
Build ✅
Overall: PASS

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github-actions · 2026-07-01T19:27:56Z

✅ Smoke Test Results (Direct BYOK Mode)

MCP Connectivity: ✅ (2 merged PRs retrieved)
HTTP (github.com): ✅ (HTTP 200)
File Write/Read: ✅ (Created and read test file)
BYOK Inference: ✅ (Running in direct mode via api-proxy)

Mode: Direct BYOK (COPILOT_PROVIDER_API_KEY) → api-proxy → api.githubcopilot.com
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github-actions · 2026-07-01T19:28:12Z

@lpcox

GitHub MCP: ✅
github.com connectivity: ✅
File I/O test: ✅
BYOK inference: ✅

Running in direct BYOK mode (AWF_AUTH_TYPE=github-oidc + AWF_AUTH_AZURE_* + COPILOT_PROVIDER_BASE_URL) via api-proxy → Azure OpenAI (Foundry, o4-mini-aw) authenticated via Microsoft Entra

Overall: PASS

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github-actions · 2026-07-01T19:28:13Z

Chroot Version Comparison Results

Runtime	Host Version	Chroot Version	Match?
Python	Python 3.12.13	Python 3.12.3	❌ NO
Node.js	v24.17.0	v22.23.0	❌ NO
Go	go1.22.12	go1.22.12	✅ YES

Overall: ❌ Not all tests passed — Python and Node.js versions differ between host and chroot environments.

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github-actions · 2026-07-01T19:28:17Z

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1. Module Loading	✅ Pass	`otel.js` loads cleanly; exports `startRequestSpan`, `setTokenAttributes`, `setBudgetAttributes`, `endSpan`, `endSpanError`, `shutdown`, `isEnabled` + internals
2. Test Suite	✅ Pass	59 tests, 0 failures — `otel.test.js`: 39 passed; `otel-fanout.test.js`: 20 passed
3. Env Var Forwarding	✅ Pass	`src/services/api-proxy-env-config.ts` forwards `OTEL_EXPORTER_OTLP_ENDPOINT`, `OTEL_EXPORTER_OTLP_HEADERS`, `OTEL_SERVICE_NAME`, and variant headers to the api-proxy container
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5. OTEL Diagnostics	✅ Pass	1 span exported to `/tmp/gh-aw/otel.jsonl` during this run — `gh-aw.agent.setup` span with traceId `1b733f6fe4a95988c3c1c1d884e9c26d`, OTLP endpoint active

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C++	fmt	✅	N/A	✅ PASS
C++	json	✅	N/A	✅ PASS
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Deno	std	N/A	1/1 passed	✅ PASS
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Java	caffeine	✅	1/1 passed	✅ PASS
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github-actions · 2026-07-01T19:29:54Z

Smoke Test: Services Connectivity

Check	Result
Redis PING (`host.docker.internal:6379`)	❌ No response
PostgreSQL pg_isready (`host.docker.internal:5432`)	❌ No response
PostgreSQL SELECT 1	❌ No response

Overall: FAIL

host.docker.internal resolves to 172.17.0.1 but both ports are unreachable from within the AWF sandbox (agent IP: 172.30.0.20). The AWF iptables rules block database ports (Redis 6379, PostgreSQL 5432) by design.

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github-actions · 2026-07-01T19:30:11Z

fix: ensure chmod runs even when chown fails in rootless permission repair — ✅
refactor: split 309-line generateDockerCompose into focused phases — ✅
GitHub.com connectivity — ✅ | File I/O — ✅ | BYOK inference — ✅
Running in direct BYOK mode (COPILOT_PROVIDER_API_KEY + COPILOT_PROVIDER_BASE_URL) via api-proxy → Azure OpenAI (Foundry, o4-mini-aw)
@lpcox PASS

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github-actions · 2026-07-01T19:35:38Z

🔥 Smoke Test Results — PASS

Test	Result
GitHub MCP connectivity	✅
GitHub.com HTTP	✅ 200
File write/read	✅

PR: fix: ensure chmod runs even when chown fails in rootless permission repair
Author: @lpcox

Overall: PASS

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Copilot AI review requested due to automatic review settings July 1, 2026 18:55

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[aw] No-Op Runs #5368

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lpcox merged commit 89fa1f1 into main Jul 1, 2026
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lpcox deleted the fix/rootless-permission-repair-chmod branch July 1, 2026 19:45

github-actions Bot mentioned this pull request Jul 1, 2026

refactor: split 309-line generateDockerCompose into focused phases #5763

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fix: rootless artifact permission repair fails on ARC/DinD topology #5816

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fix: chmod squid logs inside container before compose down #5817

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🩺 Runner Doctor UpdateRunner Doctor update: A16 (sysroot filter drops workspace mounts), A17 (build-tools unpin-able), B8 (pre-flight EACCES on persis [Content truncated due to length] #5989

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docs: Runner Doctor update — add failure modes A16, A17, B8, B9, C8; update B7, C3 lookup #5992

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