[android-porting] Root access on a user build for servicing?

[a***@d3engineering.com]

Is there a way for a service team to get root access on a user build, for
diagnosing issues with a device?

We're working on a new device based on Android. Of course, the devices,
once released, will be running user builds of the software, which do not
allow root access through ADB.

However, we need our client's service team to be able to run diagnostic
tools on defective devices that they are servicing. These tools need access
to several hardware device files, and we would rather not allow normal
end-users to be able to run these tools, so they require root. But since
there's no way to run programs as root on a user build of Android, we are
investigating options for allowing the manufacturer to run the tools while
disallowing end users.

I've looked through source.android.com, but I didn't see anything relevant.
I'm also having a hard time with Google; most of the results are for
end-users who want to root their devices, not the manufacturer.

Is there a standard way for the company that built the device to gain root
access to devices running user builds, without erasing the user's data?

---
Sincerely, Alex Parrill
D3 Engineering

[Satish Patel]

Post by a***@d3engineering.com
Is there a way for a service team to get root access on a user build, for
diagnosing issues with a device?
We're working on a new device based on Android. Of course, the devices,
once released, will be running user builds of the software, which do not
allow root access through ADB.
However, we need our client's service team to be able to run diagnostic
tools on defective devices that they are servicing. These tools need access
to several hardware device files, and we would rather not allow normal
end-users to be able to run these tools, so they require root. But since
there's no way to run programs as root on a user build of Android, we are
investigating options for allowing the manufacturer to run the tools while
disallowing end users.
I've looked through source.android.com, but I didn't see anything
relevant. I'm also having a hard time with Google; most of the results are
for end-users who want to root their devices, not the manufacturer.
Is there a standard way for the company that built the device to gain root
access to devices running user builds, without erasing the user's data?

​Possibly to default stock Android - Answer is no. But you can induce a
custom system service which can run these tests with special credential
checks (offline or online)

​

Post by a***@d3engineering.com
---
Sincerely, Alex Parrill
D3 Engineering
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Regards,
satish patel