+---------------------+ | Android Apps | +---------------------+ | Android Framework | | (System Server, | | ActivityManager) | +---------------------+ | Bionic libc + HW | | Composer HAL | +---------------------+ | Container Runtime | | (LXC, systemd-nspawn) +---------------------+ | Host Linux Kernel | | (namespaces, binder,| | ashmem, drm) | +---------------------+ | Host Window System | | (Wayland/X11) | +---------------------+
If you have been following Microsoft’s push into mobile-ecosystem integration, you have likely heard of WSA (Windows Subsystem for Android) . But have you ever dug into the folder %LOCALAPPDATA%\Packages\MicrosoftCorporationII.WindowsSubsystemForAndroid...\LocalCache and stumbled upon a file or directory labeled aow or rootfs ? aow rootfs
AOW RootFS uses the following Linux namespaces: | Namespace | Purpose | |-----------|---------| | Mount | Isolate /system, /data from host | | PID | Android processes see PID 1 as container init | | Network | Virtual bridge or host network (macvlan) | | UTS | Set hostname to “android” | | IPC | Separate System V / POSIX message queues | | User | Map container UIDs (0→100000) for security | AOW RootFS achieves near-native performance for CPU and
The AOW RootFS is not just a storage container; it manages the vital permissions and binaries required for Android to "see" and interact with Windows hardware. | | ashmem
AOW RootFS achieves near-native performance for CPU and I/O; GPU performance is limited by host driver but runs OpenGL ES 3.1 at 90% host speed.