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refine native bridge support section

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Ziyang Zhou
2023-04-01 14:34:32 +08:00
parent 47394cdd3d
commit 3f72d5270b
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README.md
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@@ -103,14 +103,12 @@ docker run -itd --rm --privileged \
## Native Bridge Support
It's possible to run `arm` Apps in `x86` *ReDroid* instance via `libhoudini`, `libndk_translator` or `QEMU translator`.
It's possible to run `arm` Apps in `x86` *ReDroid* instance via `libhoudini`, `libndk_translation` or `QEMU translator`.
Take `libndk_translator` as an example:
Check [@zhouziyang/libndk_translation](https://github.com/zhouziyang/libndk_translation) for prebuilt `libndk_translation`.
Published `redroid` images (`redroid11` / `redroid12`) already get libndk_translation included.
``` bash
# grab libndk_translator libs from Android 11 Emulator
find /system \( -name 'libndk_translation*' -o -name '*arm*' -o -name 'ndk_translation*' \) | tar -cf native-bridge.tar -T -
# example structure, be careful the file owner and mode
system/
@@ -130,65 +128,22 @@ system/
```dockerfile
# Dockerfile
FROM redroid/redroid:11.0.0-amd64
FROM redroid/redroid:11.0.0-latest
ADD native-bridge.tar /
```
```bash
# build docker image
docker build . -t redroid:11.0.0-amd64-nb
docker build . -t redroid:11.0.0-nb
# running
docker run -itd --rm --privileged \
-v ~/data11-nb:/data \
-p 5555:5555 \
redroid:11.0.0-amd64-nb \
ro.product.cpu.abilist=x86_64,arm64-v8a,x86,armeabi-v7a,armeabi \
ro.product.cpu.abilist64=x86_64,arm64-v8a \
ro.product.cpu.abilist32=x86,armeabi-v7a,armeabi \
ro.dalvik.vm.isa.arm=x86 \
ro.dalvik.vm.isa.arm64=x86_64 \
ro.enable.native.bridge.exec=1 \
ro.dalvik.vm.native.bridge=libndk_translation.so \
ro.ndk_translation.version=0.2.2
redroid:11.0.0-nb \
```
Take a look at https://gitlab.com/android-generic/android_vendor_google_emu-x86 to extract automatically libndk_translator from the Android 11 emulator images.
After following the guide on "Building" section, you will get native-bridge.tar under vendor/google/emu-x86/proprietary.
If you find errors in using libndk_translator, please try the following:
- YOU MUST HAVE binfmt_misc kernel module loaded for supporting other binaries formats! If you have not loaded it already:
```bash
sudo modprobe binfmt_misc
```
or add binfmt_misc to /etc/modules to autoload it at boot (for example in Ubuntu).
Check your specific distribution wiki/docs if you don't have binfmt_misc module and you want to install it, or how to autoload the module at boot.
- Extract the native bridge archive, preserving the permissions, set specific permissions for allowing init file to be executed and traverse of important dirs:
```bash
mkdir native-bridge
cd native-bridge
sudo tar -xpf ../native-bridge.tar `#or path to your actual native bridge tarball`
sudo chmod 0644 system/etc/init/ndk_translation_arm64.rc
sudo chmod 0755 system/bin/arm
sudo chmod 0755 system/bin/arm64
sudo chmod 0755 system/lib/arm
sudo chmod 0755 system/lib64/arm64
sudo chmod 0644 system/etc/binfmt_misc/*
sudo tar -cpf native-bridge.tar system
```
Move or copy your new native-bridge.tar into the dir where you have written your Dockerfile, and rebuild again the new image with native bridge support.
You must use sudo or a root shell to preserve the permissions and owners of the files.
## GMS Support
It's possible to add GMS (Google Mobile Service) support in *ReDroid* via [Open GApps](https://opengapps.org/), [MicroG](https://microg.org/) or [MindTheGapps](https://gitlab.com/MindTheGapps/vendor_gapps).