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Pull request overview
Implements enforcement for new WSLC-related group policies across the WSLC COM service boundary and CLI, including new HRESULTs and localized user-facing error messages, plus policy-focused tests.
Changes:
- Enforce
AllowWSLContaineratWSLCSessionManagerCOM activation time so clients fail fast withWSL_E_CONTAINER_DISABLED. - Implement
WSLContainerCLIRegistryAllowlistevaluation and enforce it for image pull/push; block image builds when an allowlist is configured. - Add new HRESULTs and localized messages, plus new policy tests (including pure-function allowlist evaluator tests).
Reviewed changes
Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
| test/windows/PolicyTests.cpp | Adds WSLC policy tests for container disable + registry allowlist behavior, including CLI coverage and evaluator unit tests. |
| src/windows/wslcsession/WSLCSession.cpp | Enforces registry allowlist for Pull/Push and blocks BuildImage when allowlist is active. |
| src/windows/service/inc/wslservice.idl | Defines WSL_E_CONTAINER_DISABLED and WSL_E_REGISTRY_BLOCKED_BY_POLICY. |
| src/windows/service/exe/WSLCSessionManagerFactory.cpp | Gates COM factory creation on AllowWSLContainer policy. |
| src/windows/inc/wslpolicies.h | Adds allowlist subkey constants and helper functions to read/evaluate the registry allowlist. |
| src/windows/common/wslutil.cpp | Registers new HRESULTs in common error mapping and adds a localized string for WSL_E_CONTAINER_DISABLED. |
| localization/strings/en-US/Resources.resw | Adds localized strings for the new policy-related user-facing error messages. |
benhillis
commented
May 8, 2026
benhillis
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May 8, 2026
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Adds enforcement for two group policies whose ADMX templates landed in PR #40422: - AllowWSLContainer (DWORD): master switch for wslc.exe and the WSLCSessionManager COM API. Enforced inside WSLCSessionManagerFactory so CoCreateInstance returns WSL_E_CONTAINER_DISABLED directly when the policy is off; every caller (wslc.exe, WslcSDK, plugins) fails fast through one code path rather than getting a manager whose every method errors out individually. - WSLContainerRegistryAllowlist: ADMX `<list valuePrefix=\"AllowedRegistry\">` policy stored as a sub-key whose REG_SZ value data is each allowed registry hostname. Enforced in PullImage and PushImage via a shared helper. BuildImage is rejected outright when an allowlist is configured, since the in-VM docker daemon fetches FROM base images through its own pull mechanism and cannot be reliably gated per-registry. The policy is fail-open: an absent or empty sub-key is treated as no restriction, and registry I/O errors fall through to allow rather than break all container operations on a transient hiccup. Adds two new HRESULTs: - WSL_E_CONTAINER_DISABLED (0x33) - WSL_E_REGISTRY_BLOCKED_BY_POLICY (0x34) Adds PolicyTests covering disabled-state, CLI surfacing, allowlist denial, build rejection, and pure-function unit tests for the allowlist evaluator. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Implement WSLC container group policies
Adds enforcement for two group policies whose ADMX templates landed in #40422:
AllowWSLContainer (DWORD): master switch for wslc.exe and the WSLCSessionManager COM API. Enforced inside WSLCSessionManagerFactory so CoCreateInstance returns WSL_E_CONTAINER_DISABLED directly when the policy is off; every caller (wslc.exe, WslcSDK, plugins) fails fast through one code path rather than getting a manager whose every method errors out individually.
WSLContainerCLIRegistryAllowlist: ADMX
<list valuePrefix=\"AllowedRegistry\">policy stored as a sub-key whose REG_SZ value data is each allowed registry hostname. Enforced in PullImage and PushImage via a shared helper. BuildImage is currently rejected outright when an allowlist is configured. This will be addressed in a follow-up change.Adds two new HRESULTs:
Adds PolicyTests covering disabled-state, CLI surfacing, allowlist denial, build rejection, and pure-function unit tests for the allowlist evaluator.