Linxr

Android Host (Flutter + Kotlin Userland App)
│
├── VmManager.kt          — QEMU lifecycle, asset extraction, SSH readiness probe lock
├── VmService.kt          — Android Foreground Service (keeps VM alive in background)
├── MainActivity.kt       — SAF document picker MethodChannel (pickFolder)
│
├── QEMU Engine (libqemu.so)
│   ├── Virtio-Net (SLIRP)— TCP_NODELAY, hostfwd 127.0.0.1:2222 -> 22, 127.0.0.1:8080 -> 8080
│   └── Virtio-9P (pci)   — Shares /storage/emulated/0/LinxrShare with guest VM
│
└── Guest VM (Alpine Linux 3.20 / Kernel 6.18-virt)
    ├── OpenRC init       — Service management & online diskexpand (resize2fs)
    ├── OpenSSH daemon    — SSH server listening on port 22 inside VM
    ├── Docker Daemon     — Native Docker Engine (overlay2 storage, bridge networking)
    └── api_server.py     — REST API bridging Flutter Containers tab to /var/run/docker.sock

Linxr/
├── android/
│   └── app/src/main/
│       ├── assets/bootstrap/   # api_server.py, init_bootstrap.sh
│       ├── assets/vm/          # kernel 6.18-virt, initramfs, base.qcow2.gz
│       └── kotlin/com/ai2th/linxr/
│           ├── MainActivity.kt  # SAF pickFolder MethodChannel
│           ├── VmManager.kt     # QEMU launcher & SSH probe lock
│           └── VmService.kt     # Foreground Service
├── lib/
│   ├── main.dart               # Main app layout & Home Screen
│   ├── constants.dart          # App constants & theme colors
│   ├── screens/
│   │   ├── terminal_screen.dart # Multi-tab SSH terminal emulator
│   │   ├── containers_screen.dart # Docker Container Dashboard & log viewer
│   │   ├── files_screen.dart    # Virtio-9P filesystem explorer
│   │   └── settings_screen.dart # vCPU/RAM/Disk sliders & SAF picker
│   └── services/
│       └── vm_platform.dart    # Platform Channels & VmState provider
├── scripts/
│   ├── build_apk.sh            # APK build script
│   ├── build_aab.sh            # Play Store AAB build script
│   ├── build_qcow2.sh          # QCOW2 Alpine image builder
│   └── _build_rootfs.sh        # Docker-based rootfs builder
├── CHANGELOG.md
├── LICENSE
└── pubspec.yaml

MIT License

Copyright (c) 2026 AI2TH

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.