Granting root access to Android system app

[Edd Barker]

I'm trying to restart a module from an Android system app, but I can't get it run because su doesn't allow for system apps.

I tried modifying su to set system apps as root but it still gives me permission error.

if(myuid == AID_SYSTEM) {
    myuid = AID_ROOT;
}

Does anyone know how I can run a root command from a system app? I have full access to the AOSP and root access from command line.

Thanks, Edd

[biAji]

You can not simply give your self root uid in this way.   

check this out:  https://su.chainfire.eu/

[Xu Koffu]

I'm not sure it can work, you can follow this attr in AndroidManifest.xml

android:sharedUserId="android.uid.system"

It will be modify PackageManagerService.java

ROOT_UID

在 2017年4月10日星期一 UTC+8下午9:59:40，Edd Barker写道：