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From: Bill Stewart <bstewart AT iname DOT com>
Date: Tue, 19 Feb 2019 08:47:26 -0700
Message-ID: <CANV9t=SW+Zt7X6ERF+d9=PhqQrxA=HSKiLJA+Xvk52rZo88k2A@mail.gmail.com>
Subject: Re: Windows to Cygwin username mapping: Domain before local account when duplicate name?
To: cygwin AT cygwin DOT com
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On Fri, Feb 15, 2019 at 3:48 PM Bill Stewart wrote:

> This means that when I test getent using the name "Admin", Cygwin
> finds the domain group:
>
> PS C:\> getent -w passwd admin
> admin:nnnnnnnn:DOMAINNAME\admin:S-1-5-21-nnnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nnnnnn
>
> I get that this is by design, but .NET finds the local account first,
> which is what I was expecting:
>
> PS C:\> $name = [Security.Principal.NTAccount] "admin"
> PS C:\> $sid = $name.Translate([Security.Principal.SecurityIdentifier])
> PS C:\> $sid.Translate([Security.Principal.NTAccount])
>
> Value
> -----
> COMPUTERNAME\Admin

So then - just to follow up - Cygwin is for sure going to stick with
"domain first" when resolving an account name that doesn't include an
authority.

(a) Is this correct?

(b) Is there a particular reason this order was chosen (instead of
local first, then domain, i.e., the usual Windows order)?

Thanks,

Bill

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