Get Calling Pid from HAL on Android 11 (r3)

[Nguyễn Trung Thành]

Hello all,

I need to get calling PID from HAL. From code, I call

if (getCurrentServingCall() == BinderCallType::HWBINDER) {

        pid = hardware::IPCThreadState::self()->getCallingPid();

}

else

{

        pid = IPCThreadState::self()->getCallingPid();

}

The code works well on Android 10. However, it always return 0 on Android 11 (r3)

Could you help me to solve the problem?

Regards,

Thanh

[Nguyễn Trung Thành]

I resolved my problem. The problem is occurred due to  I call above code from HAL interface. However, the interface is oneway interface. It seems none PID will be passed to oneway interface. I remove oneway. It works.