Experimental Physics and
Industrial Control System

Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov> · Tue, 10 Nov 2020 15:37:35 -0800

On 11/10/20 2:34 PM, Kasemir, Kay wrote:
>>  I have no name!@xf17bm-ioc2:/$
>> Ultimately, I added ..the softioc user
>> If you don't mind me asking, why is seemingly only
>> PVA affected by the no-name user issue, but not CA?
> 
> The PVA client is trying to send the user name to the server.
> I think it's using this code in modules/pvAccess/src/remote/security.cpp:
> 
>        if(osiGetUserName(&buffer[0], buffer.size()) != osiGetUserNameSuccess)
>             throw std::runtime_error("Unable to determine user account name");
> 
> At first glance I would expect that it throws the exception, but maybe it ends up with an empty user name, and that then results in follow-up problems. In any case it makes some sense that it doesn't "work" when the user is not defined.

If an exception were thrown, I think it would be caught here.
Where it is only printed at debug log level.  (my doing it seems)
Running with EPICS_PVA_DEBUG=1 set should show this.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System