Magisk/scripts/emulator.sh
2021-01-30 00:56:16 -08:00

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#!/usr/bin/env bash
#####################################################################
# AVD Magisk Setup
#####################################################################
#
# This script will setup an environment with minimal Magisk that
# Magisk Manager will be happy to run properly within the official
# emulator bundled with Android Studio (AVD).
#
# ONLY use this script for developing Magisk Manager or root apps
# in the emulator. The constructed Magisk environment is not a
# fully functional one as if it is running on an actual device.
#
# The script assumes you are using x86/x64 emulator images.
# Build binaries with `./build.py binary` before running this script.
#
#####################################################################
abort() {
echo "$@"
exit 1
}
mount_sbin() {
mount -t tmpfs -o 'mode=0755' tmpfs /sbin
$SELINUX && chcon u:object_r:rootfs:s0 /sbin
}
if [ ! -f /system/build.prop ]; then
# Running on PC
cd "$(dirname "$0")/.."
tmp="/data/local/tmp"
adb push native/out/x86/busybox native/out/x86/magiskinit scripts/emulator.sh $tmp
emu_arch=$(adb shell "chmod 777 $tmp/busybox; $tmp/busybox uname -m")
if [ "$emu_arch" = "x86_64" ]; then
adb push native/out/x86_64/magisk /data/local/tmp
else
adb push native/out/x86/magisk /data/local/tmp
fi
adb shell sh /data/local/tmp/emulator.sh
exit 0
fi
cd /data/local/tmp
chmod 777 busybox
chmod 777 magiskinit
chmod 777 magisk
if [ -z "$FIRST_STAGE" ]; then
export FIRST_STAGE=1
export ASH_STANDALONE=1
if [ `./busybox id -u` -ne 0 ]; then
# Re-exec script with root
exec /system/xbin/su 0 ./busybox sh $0
else
# Re-exec script with busybox
exec ./busybox sh $0
fi
fi
# Remove previous setup if exist
pgrep magiskd >/dev/null && pkill -9 magiskd
[ -f /sbin/magisk ] && umount -l /sbin
[ -f /system/bin/magisk ] && umount -l /system/bin
# SELinux stuffs
SELINUX=false
[ -e /sys/fs/selinux ] && SELINUX=true
if $SELINUX; then
ln -sf ./magiskinit magiskpolicy
./magiskpolicy --live --magisk
fi
BINDIR=/sbin
# Setup bin overlay
if mount | grep -q rootfs; then
# Legacy rootfs
mount -o rw,remount /
rm -rf /root
mkdir /root
chmod 750 /root
ln /sbin/* /root
mount -o ro,remount /
mount_sbin
ln -s /root/* /sbin
elif [ -e /sbin ]; then
# Legacy SAR
mount_sbin
if ! grep -q '/sbin/.magisk/mirror/system_root' /proc/mounts; then
mkdir -p /sbin/.magisk/mirror/system_root
block=`mount | grep ' / ' | awk '{ print $1 }'`
[ $block = "/dev/root" ] && block=/dev/block/dm-0
mount -o ro $block /sbin/.magisk/mirror/system_root
fi
for file in /sbin/.magisk/mirror/system_root/sbin/*; do
[ ! -e $file ] && break
if [ -L $file ]; then
cp -af $file /sbin
else
sfile=/sbin/`basename $file`
touch $sfile
mount -o bind $file $sfile
fi
done
else
# Android Q+ without sbin, use overlayfs
BINDIR=/system/bin
rm -rf /dev/magisk
mkdir -p /dev/magisk/upper
mkdir /dev/magisk/work
./magisk --clone-attr /system/bin /dev/magisk/upper
mount -t overlay overlay -olowerdir=/system/bin,upperdir=/dev/magisk/upper,workdir=/dev/magisk/work /system/bin
fi
# Magisk stuffs
cp -af ./magisk $BINDIR/magisk
chmod 755 $BINDIR/magisk
ln -s ./magisk $BINDIR/su
ln -s ./magisk $BINDIR/resetprop
ln -s ./magisk $BINDIR/magiskhide
mkdir -p /data/adb/modules 2>/dev/null
mkdir /data/adb/post-fs-data.d 2>/dev/null
mkdir /data/adb/services.d 2>/dev/null
$BINDIR/magisk --daemon