Your should build your app as priv-app(put it in /system/priv-app, and not
sign it with platform key). priv-app is allowed to call UpdateEngineService.
在 2019年6月20日星期四 UTC+8下午10:06:47，Arabi写道：
>
> *Background:* I have customized an AOSP distribution and created a custom
> OTA updater service to integrate with it. But whenever I call the updater
> service, the following error message is generated:
>
> E/SELinux: avc: denied { find } for service=android.os.UpdateEngineService
> pid=22801 uid=10024 scontext=u:r:platform_app:s0:c512,c768
> tcontext=u:object_r:update_engine_service:s0 tclass=service_manager
> permissive=0
>
> *Diagnosis:* Based on the error message, our app is being built as a
> platform_app. As a result, we are not being allowed to access the path
> '/data/' on the system.
>
> *Possible solution:* There might be two approaches towards the solution:
>
> 1. Build the app as a system_app
>
> OR,
>
> 1. Build the app as a plaform_app and change SELinux config so that
> the app is granted necessary access to '/data/' on the system.
>
> *Main question:* Am I heading towards the right direction with the
> understanding and possible solutions stated here? If not, what am I missing
> and what should be done in order to fix this issue?
>
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