cleanup: extract SkipSignal helper to deduplicate signal skip lists - #40228

* test: enable virtiofs tests and enable WSLG during testing (#14387)

* test: enable virtiofs tests and enable WSLG during testing

* test fix

---------

Co-authored-by: Ben Hillis <[email protected]>

* chore(distributions): Almalinux auto-update - 20260311 14:52:02 (#14404)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

* Fix CVE-2026-26127: bump .NET runtime from 10.0.0 to 10.0.4 (#14421)

Addresses Dependabot alerts #10 and #11. The Microsoft.NETCore.App.Runtime
packages (win-x64 and win-arm64) at version 10.0.0 are vulnerable to a
denial of service via out-of-bounds read when decoding malformed Base64Url
input (CVSS 7.5 High). Bumped to 10.0.4 which includes the fix.

Co-authored-by: Ben Hillis <[email protected]>

* Notice change from build: 141806547 (#14423)

Co-authored-by: WSL notice <[email protected]>

* Ship initrd.img in MSI using build-time generation via powershell script (#14424)

* Ship initrd.img in MSI using build-time generation via tar.exe

Replace the install-time CreateInitrd/RemoveInitrd custom actions with a
build-time step that generates initrd.img using the Windows built-in
tar.exe (libarchive/bsdtar) and ships it directly in the MSI.

The install-time approach had a race condition: wsl.exe could launch
before the CreateInitrd custom action completed, causing
ERROR_FILE_NOT_FOUND for initrd.img.

Changes:
- Add CMake custom command to generate initrd.img via tar.exe --format=newc
- Add initrd.img as a regular file in the MSI tools component
- Remove CreateInitrd/RemoveInitrd custom actions from WiX, DllMain,
  and wslinstall.def
- Remove CreateCpioInitrd helper and its tests (no longer needed)
- Update pipeline build targets to build initramfs instead of init

* pr feedback

* more pr feedback

* switch to using a powershell script instead of tar.exe

* powershell script feedback

* hopefully final pr feedback

---------

Co-authored-by: Ben Hillis <[email protected]>

* virtiofs: update logic so querying virtiofs mount source does not require a call to the service (#14380)

* virtiofs: update logic so querying virtiofs mount source does not require a call to the service

* more pr feedback

* use std::filesystem::read_symlink

* pr feedback and use canonical path in virtiofs symlink

* make sure canonical path is always used

---------

Co-authored-by: Ben Hillis <[email protected]>

* virtio networking: add support for ipv6 (#14350)

* VirtioProxy: Add IPv6 address, gateway, and route support

- Add PreferredIpv6Address field and GetBestGatewayV6* methods to NetworkSettings
- Extend GetHostEndpointSettings() to discover IPv6 unicast address and gateway
- Add UpdateIpv6Address() using ModifyGuestEndpointSettingRequest<IPAddress>
- Push IPv6 default route to guest via UpdateDefaultRoute(AF_INET6)
- Remove AF_INET6 early return in ModifyOpenPorts, use INETADDR_PORT()
- Add EndpointRoute::DefaultRoute() static factory
- Pass client_ip_ipv6 in devicehost options (not yet parsed by devicehost)
- Remove gateway_ip from devicehost options (only needed for DHCP)
- Include IPv6 DNS servers in non-tunneling DNS settings
- Add ConfigurationV6 and DnsResolutionAAAA tests

* cleanup and add more ipv6 tests

* added test coverage and minor updates

* clang format

* pr feedback

* format source

* pr feedback

* test fixes

---------

Co-authored-by: Ben Hillis <[email protected]>

* Track `bind` syscall when port is 0 (#14333)

* Initial work

* .

* pr feedback and add unit test

* minor tweaks an fix use after free in logging statement

* implement PR feedback

* hopefully final pr feedback

* pr feedback in test function

* Address PR feedback: add try/catch to TrackPort and PortZeroBind queue push

---------

Co-authored-by: Ben Hillis <[email protected]>

* Add iptables to list of apps to install in WSL (#14459)

There were instructions already on how to install tcpdump in WSL, but
iptables are also needed for the log collection to be complete, so this
PR adds instructions on how to also install iptables.

Co-authored-by: Andre Muezerie <[email protected]>

* Update Microsoft.WSL.DeviceHost to version 1.1.39-0 (#14460)

Co-authored-by: Ben Hillis <[email protected]>

* Moves all Ubuntu distros to the tar-based format (#14463)

* Move all supported Ubuntu images to the new format

We backported the build pipeline so all current LTSes come out in the new tar-based format

* Remove the appx based distros

All WSL users can run tar-based distros by now, right?
There is no benefit in maintaining both formats.

* Enable DNS tunneling for VirtioProxy networking mode (#14461)

- Allow VirtioProxy to keep EnableDnsTunneling=true in config, but clear
  socket-specific options (BestEffortDnsParsing, DnsTunnelingIpAddress)
- Suppress dedicated DNS tunneling hvsocket for VirtioProxy; tunneling
  is handled through the VirtioNetworking device host instead
- Set DnsTunneling flag on VirtioNetworkingFlags so the device host
  knows to tunnel DNS
- Expand SWIOTLB kernel cmdline to cover VirtioFs and VirtioProxy
- Bump DeviceHost package to 1.1.39-0
- Add VirtioProxy DNS test coverage for tunneling on/off
- Skip GuestPortIsReleasedV6 on Windows 10

Co-authored-by: Ben Hillis <[email protected]>

* test: disable LoopbackExplicit due to OS build 29555 regression (#14477)

Co-authored-by: Ben Hillis <[email protected]>

* Refactor: trim unnecessary DLL deps from COMMON_LINK_LIBRARIES (#14426)

* Refactor: trim unnecessary DLL deps from COMMON_LINK_LIBRARIES

- Split MSI/Wintrust install functions from wslutil.cpp into install.cpp
- Remove MI.lib, wsldeps.lib, msi.lib, Wintrust.lib, computecore.lib,
  computenetwork.lib, Iphlpapi.lib from COMMON_LINK_LIBRARIES
- Add per-target MSI_LINK_LIBRARIES, HCS_LINK_LIBRARIES, SERVICE_LINK_LIBRARIES
- Delay-load msi.dll and WINTRUST.dll for wsl.exe and wslg.exe
- Result: wslhost, wslrelay, wslcsdk, testplugin lose msi/wintrust startup imports;
  wsl.exe and wslg.exe defer msi/wintrust loading until actually needed;
  wslservice is the only target that imports computecore/computenetwork/Iphlpapi

* minor fixes to install.cpp that were caught during PR

* move to wsl::windows::common::install namespace

---------

Co-authored-by: Ben Hillis <[email protected]>

* Fix wsl stuck when misconfigured cifs mount presents (#14466)

* detach terminal before running mount -a

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <[email protected]>

* use _exit on error before execv in child process to avoid unintentional resource release

* Add regression test

* Fix clang format issue

* fix all clang format issue

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <[email protected]>

* resolve ai comments

* move test to unit test

* Fix string literal

* Overwrite fstab to resolve pipeline missing file issue

---------

Co-authored-by: Feng Wang <[email protected]>
Co-authored-by: Copilot Autofix powered by AI <[email protected]>

* Update localization and notice scripts to target the branch that the pipeline is running on (#14492)

* test: Add arm64 test distro support (#14500)

* test: Add arm64 test distro support

* update unit test baseline

* more test baseline updates

---------

Co-authored-by: Ben Hillis <[email protected]>

* test: remove duplicated DNS test coverage (#14522)

* test: remove duplicated DNS test coverage

* format source

---------

Co-authored-by: Ben Hillis <[email protected]>

* Fix: Fail and warn the user when --uninstall is given parameters (#14524)

Fail and warn the user when --uninstall is given parameters.

* Localization change from build: 142847827 (#14525)

Co-authored-by: WSL localization <[email protected]>

* virito net: revert to previous DNS behavior while we debug an issue with DNS over TCP (#14532)

Co-authored-by: Ben Hillis <[email protected]>

* devicehost: update to latest devicehost nuget with tracing improvements (#14531)

Co-authored-by: Ben Hillis <[email protected]>

* Localization change from build: 142949177 (#14542)

Co-authored-by: WSL localization <[email protected]>

* Revert "test: enable virtiofs tests and enable WSLG during testing (#14387)" (#14538)

* Revert "test: enable virtiofs tests and enable WSLG during testing (#14387)"

* enable wslg for SystemdNoClearTmpUnit test

---------

Co-authored-by: Ben Hillis <[email protected]>

* Localization change from build: 143033415 (#14553)

Co-authored-by: WSL localization <[email protected]>

* Update cgmanifest to match CMakeLists.txt (#14550)

* Update cgmanifest to match CMakeLists.txt

* Update CMakeLists.txt

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Copilot <[email protected]>

* Notice change from build: 143064110 (#14556)

Co-authored-by: WSL notice <[email protected]>

* Update Microsoft.WSL.DeviceHost to version 1.1.48-0 (#40036)

* Update Microsoft.WSL.DeviceHost to version 1.1.48-0 (#14575)

Co-authored-by: Ben Hillis <[email protected]>

* Re-enable WSLG during testing.

This reverts commit bf759a0.

* add back config change (will work with new default, but makes test explicit)

---------

Co-authored-by: Ben Hillis <[email protected]>

* Bump Kali to 2026.1 (#14574)

Release notes: https://www.kali.org/blog/kali-linux-2026-1-release/

* socketshared: add maximum message size to avoid very large allocations (#40050)

Co-authored-by: Ben Hillis <[email protected]>

* Fix: bind interrupted by seccomp signal race (#14554)

* Use wait_for_completion_killable instead of the default wait_for_completion_interruptible

* retry if kernel does not support the new flag

* archlinux: Release 2026.04.01.162669 (#40059)

This is an automated release [1].

[1] https://gitlab.archlinux.org/archlinux/archlinux-wsl/-/blob/main/.gitlab-ci.yml

* triage: pass action inputs via env vars instead of inline expansion (#40060)

Move inputs.comment, inputs.issue, and inputs.token into the env
block, consistent with how inputs.previous_body is already handled.
This avoids issues with special characters in input values being
misinterpreted during shell evaluation.

Co-authored-by: Ben Hillis <[email protected]>

* Set Distro Env HOSTTYPE to aarch64 for ARM64 build (#40048)

* Set Distro Env HOSTTYPE to aarch64 for ARM64 build


---------

Co-authored-by: Xin Wang (from Dev Box) <[email protected]>

* devicehost: stop re-signing and fix MSI installer failing to replace wsldevicehost.dll (#40075)

* devicehost: stop re-signing and fix MSI installer failing to replace
wsldevicehost.dll

* pr feedback

* use MSIRMSHUTDOWN = 1 instead of custom action

---------

Co-authored-by: Ben Hillis <[email protected]>

* docs: overhaul Copilot instructions with coding conventions and prompt files (#40113)

* docs: overhaul Copilot instructions with coding conventions and prompt files

Major update to .github/copilot-instructions.md:
- Add coding conventions (naming, error handling, RAII, strings, headers,
  synchronization, localization, telemetry, formatting, IDL/COM, config)
- Add test authoring summary pointing to detailed test.md prompt
- Add namespace-to-directory map for top-level namespaces
- Add key source files list (defs.h, WslTelemetry.h, wslc.idl, etc.)
- Replace clang-format references with .\FormatSource.ps1
- Consolidate duplicate timing info into single reference table

New files:
- .github/copilot/review.md: Review prompt focused on high-risk areas
  (ABI breaks, missing localization, resource safety)
- .github/copilot/test.md: Test generation prompt with TAEF patterns
- .github/copilot/commit.md: Commit message guidelines
- .editorconfig: Editor settings for non-C++ files

Co-authored-by: Copilot <[email protected]>

* docs: address PR review feedback

- Scope precomp.h guidance to Windows components (Linux doesn't use it)
- Fix review.md reference to .github/copilot-instructions.md
- Restore clang-format as Linux formatting option alongside FormatSource.ps1
- Note FormatSource.ps1 requires cmake . first
- Fix en-us -> en-US casing

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Suppress MSI-initiated reboots during Store updates (#40079)

When the WSL MSIX package is updated via the Microsoft Store, the
WslInstaller service automatically upgrades the MSI package by calling
MsiInstallProduct. This call was made with INSTALLUILEVEL_NONE (silent
install) but without setting the REBOOT=ReallySuppress property.

Per Windows Installer documentation, when a silent install encounters
files in use and REBOOT is not suppressed, the system reboots
automatically without any user prompt. This could cause unexpected
machine restarts after a Store update when WSL binaries (e.g.
wslservice.exe) were in use during the upgrade.

Every deployment script in the repo already passes /norestart to
msiexec (deploy-to-host.ps1, deploy-to-vm.ps1, install-latest-wsl.ps1,
test-setup.ps1), but the programmatic MsiInstallProduct path used by
the WslInstaller service lacked the equivalent property.

This change:
- Always appends REBOOT=ReallySuppress to MsiInstallProduct arguments
  in UpgradeViaMsi, preventing Windows Installer from ever initiating
  a system restart during install/upgrade.
- Switches UninstallViaMsi from MsiConfigureProduct to
  MsiConfigureProductEx so we can pass REBOOT=ReallySuppress during
  uninstall as well.
- Propagates ERROR_SUCCESS_REBOOT_REQUIRED (3010) to callers instead
  of swallowing it. User-facing paths (wsl --update, wsl --uninstall)
  print a reboot-needed message to stderr. The background WslInstaller
  service silently treats 3010 as success since it has no console.

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Fix UnicodeEncodeError in create-release.py on cp1252 consoles (#40127)

* Fix UnicodeEncodeError in create-release.py on cp1252 consoles

Reconfigure stdout/stderr with errors='backslashreplace' so commit
messages containing characters outside the console code-page (e.g.
U+2225) are escaped instead of crashing the script.  Also redirect the
'failed to extract PR number' warning to stderr for consistency.

Co-authored-by: Copilot <[email protected]>

* Fix return type annotation for get_github_pr_message()

Update the return annotation from str to tuple[str | None, str | None]
to match the actual return values (pr_body, pr_number).

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* build: add Source Link to embed GitHub source mappings in PDBs (#40055)

* build: add Source Link to embed GitHub source mappings in PDBs

* Gate Source Link on pipeline builds only

Only generate sourcelink.json and pass /SOURCELINK to the linker when
PIPELINE_BUILD_ID is defined (i.e. during CI pipeline builds). This
avoids unnecessary Source Link artifacts in local developer builds.

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Add /attachdebugger option to automatically launch WinDbgX for test debugging (#40116)

* Add /attachdebugger option to automatically launch WinDbgX for test debugging

When /attachdebugger is passed to test.bat, run-tests.ps1 now:
- Starts te.exe with /waitfordebugger in the background
- Polls for the TE.ProcessHost.exe child process via WMI
- Launches WinDbgX attached directly to the test host PID
- With /inproc, attaches to TE.exe itself instead

This replaces the manual workflow of running /waitfordebugger, reading
the PID from the output, and launching WinDbgX separately.

Co-authored-by: Copilot <[email protected]>

* run-tests: use /inproc with /attachdebugger, simplify exit

Per review feedback from @OneBlue:
- Add /inproc when /attachdebugger is set so WinDbgX attaches
  directly to TE.exe instead of polling for TE.ProcessHost.exe
- Simplify exit to pass through TE.exe exit code directly

Co-authored-by: Copilot <[email protected]>

* docs: update /attachdebugger to reflect /inproc behavior

The script now always adds /inproc, so update the README to match:
WinDbgX attaches directly to TE.exe, no ProcessHost polling.

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Replace pre-commit hook with CMake-generated clang-format check (#40136)

* Replace pre-commit hook with CMake-generated clang-format check

Replace the old pre-commit hook that shelled out to PowerShell and
never blocked commits (-NoFail) with a CMake-generated hook that
calls clang-format directly on staged C/C++ files.

- Add tools/hooks/pre-commit.in as a CMake template
- CMake resolves the clang-format path at configure time via
  LLVM_INSTALL_DIR, matching the existing FormatSource.ps1.in pattern
- Hook blocks commits on formatting errors, skips gracefully if
  clang-format is not available (cmake not yet run)
- ~5x faster than the old PowerShell approach (~0.5s vs ~2.6s)

* Make pre-commit hook behavior configurable via WSL_PRE_COMMIT_MODE

Add WSL_PRE_COMMIT_MODE CMake cache variable with three modes:
- warn (default): report formatting issues without blocking commit
- error: block commit when formatting issues are found
- fix: auto-format files and re-stage them

Also addresses PR feedback:
- Generate hook into build tree, copy to source tree for out-of-source builds
- Use repo-local tools/clang-format.exe instead of LLVM_INSTALL_DIR path
- Use @only in configure_file to avoid shell variable substitution issues
- Document modes in dev-loop.md and UserConfig.cmake.sample

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Split x64/arm64 builds into parallel pipeline stages (#14497)

* Split x64/arm64 builds into parallel pipeline stages

Restructure the CI/CD pipeline to build x64 and arm64 in parallel
instead of sequentially, reducing end-to-end build time.

Pipeline shapes:
- PR: build_x64 ∥ build_arm64 → test (uses installer.msix directly)
- Nightly: build_x64 ∥ build_arm64 → package → test (dev-cert bundle)
- Release: build_x64 ∥ build_arm64 → package → test (ESRP-signed bundle)

Key changes:
- Extract shared build-job.yml template parameterized by platform
- Add package-stage.yml that creates msixbundle from both platform
  artifacts, ESRP-signs for release, dev-cert signs for nightly
- PR tests run immediately after x64 build using installer.msix
  (no package stage, no bundle needed)
- Release/nightly tests wait for the package stage and test the real
  signed bundle that gets published
- CloudTest configs are parameterized: release tests pull the bundle
  from the [package] artifact, PR tests use installer.msix from [drop]
- arm64 + formatting checks always run in parallel with x64 but don't
  block the PR test gate
- CodeQL runs in the arm64 stage (off the critical path)
- flight-stage and nuget-stage updated for new stage names

* formatting

* Remove redundant runtime conditions on release-only tasks

These tasks are already wrapped in compile-time conditionals which
prevent them from being added to the pipeline definition for
non-release builds. The runtime condition checks can never evaluate
to false at that point, so they are pure noise.

Co-authored-by: Copilot <[email protected]>

* Address review feedback from OneBlue

- Remove wslcsdk NuGet staging (wslc is not in master)
- Always include [package] provider in TestMap.xml.in instead of
  conditionally injecting via PACKAGE_PROVIDER_BLOCK cmake variable.
  PR builds simply use [drop] as TEST_PACKAGE_PROVIDER; the [package]
  provider exists but is unused.
- Add BUNDLE_ONLY cmake option so the package pipeline stage reuses
  cmake's existing bundle target instead of forking makeappx logic.
  This locks the SDK version via cmake (CMAKE_SYSTEM_VERSION) and
  keeps bundle creation logic in one place (msixinstaller/CMakeLists.txt).
  The pipeline now copies msix files to expected paths, runs a fast
  cmake configure with -DBUNDLE_ONLY=TRUE, and builds the bundle target.
- Remove dead NuGet binary restore step in package stage.

Co-authored-by: Copilot <[email protected]>

* Address PR review feedback

- Fix PACKAGE_VERSION regex: escape dots so only A.B.C.D is accepted
- Consolidate CMake defaults (build type, config types, output dir)
  before BUNDLE_ONLY block to avoid duplication
- Nightly tests now use the full bundle from the package stage instead
  of installer.msix (new INCLUDE_PACKAGE_STAGE cmake variable)
- Package stage reuses version output from build stage instead of
  recomputing it

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Mask console-getty.service to prevent multi-distro failures (#13595) (#14490)

* Mask console-getty.service to prevent multi-distro failures (#13595)

When multiple WSL distros run concurrently, /dev/tty devices are shared
at the VM level. The second distro's console-getty.service fails because
the tty is already held by the first, causing systemd to report failed
units and triggering [email protected] failures.

Mask console-getty.service during WSL systemd unit generation, similar
to the existing masking of networkd-wait-online. This service provides
no value in WSL since users don't connect to the underlying tty.

Fixes #13595

* format source

* pr feedback

---------

Co-authored-by: Ben Hillis <[email protected]>

* Fix random "ERROR_FILE_NOT_FOUND" when unmounting with absolute path (#40092)

Fix ERROR_FILE_NOT_FOUND when unmounting a vhd with absolute path after the vm timeouts.

* Refactor tests: use TAEF metadata for WSL version filtering (#40140)

Cherry-pick WSL1/WSL2 test changes from 9c4dba9 (feature/wsl-for-apps).

Replace runtime WSL1_TEST_ONLY()/WSL2_TEST_ONLY() skip macros with
WSL1_TEST_METHOD()/WSL2_TEST_METHOD() TAEF metadata macros. This moves
version filtering to the test runner level via /select: queries, so
inapplicable tests are excluded entirely instead of appearing as skipped.

Updated files:
- test/windows/Common.h: New macros + removed old skip macros
- test/windows/*.cpp: Converted all test methods
- tools/test/run-tests.ps1: Auto-add /select: when no user filter
- cloudtest/TestGroup.xml.in: Add version filter to TAEF args
- test/README.md: Document new macros

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Fix mount test build: use WSL2_TEST_METHOD macro for AbsolutePathVhdUnmountAfterVMTimeout (#40162)

Replace raw TEST_METHOD + WSL2_TEST_ONLY() with WSL2_TEST_METHOD macro,
consistent with the refactor in #40140.

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Fix various build issues if the repo path contains a space (#40160)

* Add git entries for libarchive and boost in cgmanifest.json (#40155)

The OSPO notice@0 task cannot resolve licenses for components
registered with type 'other' (source tarballs). Add parallel
type 'git' entries pointing at the GitHub repos with the exact
commit SHAs for the release tags (v3.7.7 and boost-1.90.0).

The existing 'other' entries are kept for accurate provenance
tracking of the actual tarball downloads used by CMake
FetchContent. The 'git' entries enable the notice generator to
look up licenses from ClearlyDefined.

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Fixes to route mirroring (#40099)

* route fixes from protonvpn testing

* add unit test, fix log

* ai code review

* format with vs 2022

* review

* remove optional has_value checks

* harden contracts for to, via having or not having values

* update IsOnlink check

* fix constructor parameters

* fix build

---------

Co-authored-by: Catalin-Emil Fetoiu <[email protected]>

* re enable (#40156)

Co-authored-by: Catalin-Emil Fetoiu <[email protected]>

* fix wrong variable checking (#40185)

Co-authored-by: Xin Wang (from Dev Box) <[email protected]>

* Add warning to collect-wsl-logs.ps1 to be displayed when tool is missing (#14447)

* Added warning message to collect-wsl-logs.ps1

* Add warning to collect-wsl-logs.ps1 to be displayed when tool is missing

On executing the log collection script, it will first confirm the
required tools tcpdump and iptables are installed. For each tool
missing a warning is displayed, reminding the user that the tool
should be installed prior to executing the script to get a more
complete log collection.

* Eliminated reduntant parameter and added handling for situation where WSL might be unavailable

* Remove try/catch from function's implementation

---------

Co-authored-by: Andre Muezerie <[email protected]>

* Bump Microsoft.NETCore.App.Runtime to 10.0.6 (CVE-2026-32178) (#40207)

Update Microsoft.NETCore.App.Runtime.win-x64 and
Microsoft.NETCore.App.Runtime.win-arm64 from 10.0.4 to 10.0.6 to
resolve CVE-2026-32178 (.NET Spoofing Vulnerability).

Fixes Dependabot alerts #12 and #13.

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Fix VHD ownership after cross-volume move to prevent E_ACCESSDENIED (#40159)

* Fix VHD ownership after cross-volume move to prevent E_ACCESSDENIED

When MoveDistribution moves a VHD across volumes, MoveFileEx copies the
file and the new file's owner may not be the user's SID. This causes
HcsGrantVmAccess to fail with E_ACCESSDENIED when later launching the
distro, because the impersonated user lacks WRITE_DAC on the file
(only implicitly granted to the owner).

Fix by explicitly setting the VHD owner to the user's SID after the
move, matching what CreateVhd already does at creation time. Uses
handle-based SetSecurityInfo with FILE_FLAG_OPEN_REPARSE_POINT to
avoid TOCTOU races and symlink following.

Also fixes a pre-existing build break in MountTests.cpp from the test
refactor (WSL2_TEST_ONLY -> WSL2_TEST_METHOD).

Co-authored-by: Copilot <[email protected]>

* Preserve original VHD owner instead of using GetUserSid()

Instead of unconditionally setting the VHD owner to the caller's SID
after a cross-volume move, read the original owner before the move and
restore it afterward. This avoids changing ownership to someone who
didn't originally own the file.

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* fix: use {} format specifier instead of %s in Linux LOG_ERROR path (#40227)

The Linux #else branch of SocketChannel.h uses LOG_ERROR which expects
fmt-style {} placeholders, but the channel name was using printf-style %s.

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Update MoveVhdOwnership test to WSL2 only (#40223)

* Initial plan

* Update MoveVhdOwnership test to WSL2 only

Agent-Logs-Url: https://github.com/microsoft/WSL/sessions/65d80936-791c-411b-8da2-d8c1bc06e651

Co-authored-by: benhillis <[email protected]>

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Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: benhillis <[email protected]>

* fix: use ssize_t for readlinkat return value in p9file.cpp (#40226)

readlinkat() returns ssize_t, not int. On 64-bit systems this could
silently truncate the return value for very long symlink targets.

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* cleanup: extract SkipSignal helper to deduplicate signal skip lists (#40228)

* cleanup: extract SkipSignal helper to deduplicate signal skip lists

UtilSaveSignalHandlers and UtilSetSignalHandlers had identical switch
statements for skipping non-settable signals. Extract a shared helper
to keep the skip list in one place.

Co-authored-by: Copilot <[email protected]>

* address review: document SkipSignal signals and update function headers

Add comments explaining why each signal is skipped (POSIX non-settable,
NPTL internal signals 32-34, SIGHUP handled separately). Update
UtilSaveSignalHandlers and UtilSetSignalHandlers descriptions to
reference SkipSignal() instead of just mentioning SIGHUP.

Co-authored-by: Copilot <[email protected]>

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Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* fix: use correct GetAddrInfoTestEntry handler for get_addr_info test (#40225)

The get_addr_info test entry was incorrectly mapped to GetSetIdTestEntry
instead of GetAddrInfoTestEntry, causing the wrong test handler to run.

Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: Copilot <[email protected]>

* Upload binaries when publishing symbols (#40208)

* Experiment with symbols

* Don't delete dlls

* Cleanup diff

* Fix clang-format violation in UnitTests.cpp

Co-authored-by: Copilot <[email protected]>

* Include VirtioProxy in IsDnsTunnelingSupported assert

The feature branch adds NetworkingMode::VirtioProxy which supports DNS
tunneling, but master's assert in IsDnsTunnelingSupported() only expected
Nat or Mirrored. This would fire in debug builds when VirtioProxy is
selected (e.g. after NAT fallback).

Co-authored-by: Copilot <[email protected]>

* Add wslcsdk.dll and TestData to test artifacts in build-job.yml

Master's pipeline refactor missed copying wslcsdk.dll (runtime dependency
of wsltests.dll) and the Microsoft.WSL.TestData package to the test
artifact staging area. This caused all test stages to fail with
ERROR_MOD_NOT_FOUND when loading wsltests.dll.

Co-authored-by: Copilot <[email protected]>

* Use dynamic package path for WSLC tests

The WSLC test group template was hardcoding the msixbundle path,
which doesn't exist in PR builds where the package stage is skipped.
Use the same TEST_PACKAGE_PROVIDER/TEST_PACKAGE_PATH/TEST_PACKAGE_FILE
variables as the WSL1/WSL2 test template, so WSLC tests use
installer.msix in PR builds and the bundle in release/nightly builds.

Co-authored-by: Copilot <[email protected]>

* Stage wslcsdk.lib and wslcsdk.dll for Containers nuget package

The package stage needs wslcsdk.lib and wslcsdk.dll to pack
Microsoft.WSL.Containers.nuspec, but the split pipeline doesn't
build wslcsdk in the package stage. Stage these files as build
artifacts from both x64 and arm64 build jobs, then copy them to
the expected bin paths in the package stage before nuget pack.

Co-authored-by: Copilot <[email protected]>

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Co-authored-by: Ben Hillis <[email protected]>
Co-authored-by: AlmaLinux Autobot <[email protected]>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Blue <[email protected]>
Co-authored-by: WSL notice <[email protected]>
Co-authored-by: Daman Mulye <[email protected]>
Co-authored-by: Andre Muezerie <[email protected]>
Co-authored-by: Andre Muezerie <[email protected]>
Co-authored-by: Carlos Nihelton <[email protected]>
Co-authored-by: Feng Wang <[email protected]>
Co-authored-by: Feng Wang <[email protected]>
Co-authored-by: Copilot Autofix powered by AI <[email protected]>
Co-authored-by: g0tmi1k <[email protected]>
Co-authored-by: Arch Linux Technical User <[email protected]>
Co-authored-by: wangxin12 <[email protected]>
Co-authored-by: Xin Wang (from Dev Box) <[email protected]>
Co-authored-by: Copilot <[email protected]>
Co-authored-by: FetoiuCatalin <[email protected]>
Co-authored-by: Catalin-Emil Fetoiu <[email protected]>
Co-authored-by: Copilot <[email protected]>
Co-authored-by: benhillis <[email protected]>