Re: Re: BUG #13755: pgwin32_is_service not checking if SECURITY_SERVICE_SID is disabled

On Tue, Nov 8, 2016 at 12:16 PM, Tsunakawa, Takayuki
<tsunakawa.takay@jp.fujitsu.com> wrote:
> From: pgsql-hackers-owner@postgresql.org
>> [mailto:pgsql-hackers-owner@postgresql.org] On Behalf Of Michael Paquier
>> https://msdn.microsoft.com/ja-jp/library/windows/desktop/ms684190(v=vs
>> > .85).aspx
>>
>> That's what I looked at as well :) And this part is what caught my attention,
>> meaning that it is not used by anything else than the SCM:
>> "The LocalSystem account is a predefined local account used by the service
>> control manager."
>
> The same thing is said about other two special accounts, so they need to be checked if we really believe we need to check for LocalSystem.
>
> "The LocalService account is a predefined local account used by the service control manager."
> "The NetworkService account is a predefined local account used by the service control manager."
>
> But, in practice, SECURITY_SERVICE_RID has turned out to be enough.

Hm... See here:
http://stackoverflow.com/questions/6084547/how-to-check-whether-a-process-is-running-as-a-windows-service
And particularly this quote:
"No, that is not reliable because if a service is started from command
line for example it will not have this token. "
-- 
Michael