[ISSUE] Support for Root(SU) on Car system

[wmailn]

Describe the bug I already have the system signature, but it's still prompted “Could not acquire root access”

Firewall Logs

IPv4 Rules

================== Network interfaces

======== ifconfig

=========== System info

Android version: 9 Manufacturer: alps Model: ac8257_demo Build: full_ac8257_demo-userdebug 9 PPR1.180610.011 eng.bean.20200926.064800 test-keys Active interface: wifi Wifi Tether status: no Bluetooth Tether status: unknown Usb Tether status: unknown Roam status: no IPv4 subnet: 172.16.0.95/24 IPv6 subnet: fe80::ae06:a893:36c2:189e/64 /system/bin/su: not present /system/xbin/su: 68400 bytes /data/magisk/magisk: not present /system/app/Superuser.apk: not present Superuser: none found

=========== Preferences

NewDBNotification: true appVersion: 19450 block_filter_app: Profile Mode : whitelist Status : Disabled

====== Logcat

22:03:20 Selected Profile: AFWallPrefs 22:03:20 Startin boot service 22:03:20 Starting firewall service onboot 22:03:20 isWifiApEnabled is false 22:03:20 Found ipv6: fe80::ae06:a893:36c2:189e/64 22:03:20 Found ipv4: 172.16.0.95/24 22:03:20 Getting interface details... 22:03:20 Now assuming wifi connection (bluetooth-tethered: no, usb-tethered: no) 22:03:20 IPv4 LAN netmask on eth0: 172.16.0.95/24 22:03:20 IPv6 LAN netmask on eth0: fe80::ae06:a893:36c2:189e/64 22:03:20 BOOT_COMPLETED: firewall is disabled, ignoring 22:03:21 BluetoothProfile.ServiceListener connected 14:03:46 binary installation for arm64-v8a succeeded 14:03:46 binary installation for armeabi-v7a succeeded 14:03:46 binary installation for armeabi succeeded 14:03:47 Selected Profile: AFWallPrefs 14:04:53 BluetoothProfile.ServiceListener connected 14:04:53 BluetoothProfile.ServiceListener connected 14:21:06 Selected Profile: AFWallPrefs 14:21:09 BluetoothProfile.ServiceListener connected 14:21:09 BluetoothProfile.ServiceListener connected 14:21:13 BluetoothProfile.ServiceListener connected 14:21:13 BluetoothProfile.ServiceListener connected 14:26:23 Received cmds: #1 14:26:23 Hashing....false 14:26:23 -1 14:26:23 Starting root shell... 14:26:23 Can't open root shell: exitCode -3 14:26:23 Start processing next state 14:26:23 Received cmds: #1 14:26:23 Hashing....false 14:26:23 -1 14:26:23 Start processing next state 14:26:23 Received cmds: #1 14:26:23 Hashing....false 14:26:23 -1 14:26:23 Start processing next state

Smartphone (please complete the following information):

• Device: [AC8257 Car]
• Android OS: [Android 9.0]

Additional context This is running in an car device system

[wmailn]

The APP signature is the same as the System signature and is placed System/app