X-Recipient:	archive-cygwin AT delorie DOT com
DKIM-Filter:	OpenDKIM Filter v2.11.0 sourceware.org 515253858282
DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com;
	s=default; t=1714109006;
	bh=MiypqcXeWA9dbQMFLX0jL3bRLjjhOCk6cUCUxPputuo=;
	h=Date:Subject:To:References:In-Reply-To:List-Id:List-Unsubscribe:
	List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc:
	From;
	b=sdONDYAE0TxurRCpkS4jQHfPTfndutRyVMvzyXQF8/nCfNiVPHSfTSErO+Vz+/G5G
	iUbBcQcL1iKHOicwHScCWXQGrNKCNZuAsv/kBLrds6it+KjYW1Zko68eusfNQy2X8M
	TyMB9MmLw69ALClO99D7vqYS9o7AaB7TkIeoI0rw=
X-Original-To:	cygwin AT cygwin DOT com
Delivered-To:	cygwin AT cygwin DOT com
DMARC-Filter:	OpenDMARC Filter v1.4.2 sourceware.org 3C7663858C50
ARC-Filter:	OpenARC Filter v1.0.0 sourceware.org 3C7663858C50
ARC-Seal:	i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1714108984; cv=none;
	b=h76RRyak869Ot3WRrEf9n054FLRv22IfVNtCYEULnMTN/9xnHfz88Jv+4SCkbdLh7kQPT3vpCjZ0iVF6Zp+KoQSxEPJd1HwqVe9eXNAdPMWCKs0xjbchbfzttt9jLuIhlKIx8DAweaHZI1OW4cFq0AdjH165uYdL0pJwGMuaOU4=
ARC-Message-Signature:	i=1; a=rsa-sha256; d=sourceware.org; s=key;
	t=1714108984; c=relaxed/simple;
	bh=CPsLmeAh8Iug3D+HEctLWracmeqWcBqz7ZzZ5MyLSqw=;
	h=Message-ID:Date:MIME-Version:Subject:To:From;
	b=AmeooLZtpp5Wpud+io+DVQYT8qXi+wwjh3x+VeggGxtPVERXkxUhjP1XzL5ulwKza99Rag4rVH1uUU1XKTXBLxro7ZCOFls7fK3azSVvgzabp91zKu6lnspUKVlXoY3LPTzHRfz5fIoNTm1A5vQlCxXX06oBFaCK1NB0irhNOBI=
ARC-Authentication-Results:	i=1; server2.sourceware.org
Message-ID:	<ad10d976-4342-4114-9319-03884ca26c30@SystematicSW.ab.ca>
Date:	Thu, 25 Apr 2024 23:23:00 -0600
MIME-Version:	1.0
User-Agent:	Mozilla Thunderbird
Subject:	Re: DOS namespaces, accessible/walk-able as Admin via Cygwin?
To:	cygwin AT cygwin DOT com
References:	<CAAvCNcAKyzp7eMwcGa7_hRUiKkHP2YaBDko911jJunwBdZ9mKQ AT mail DOT gmail DOT com>
	<608a6fa5-22e0-4b46-b1c9-9074be3aa1e1 AT Shaw DOT ca>
	<CAAvCNcCufFgHRokmARNYnC22mCDk9LyUt2WCm-rRAo0wqsYDVg AT mail DOT gmail DOT com>
	<0cac6601-21bb-4582-8326-6ce5d01d9f9b AT SystematicSW DOT ab DOT ca>
	<CAAvCNcByRFaUeWPhm4F_Mxbytw0W0xARymy+7Ch5kp02oszQsw AT mail DOT gmail DOT com>
Organization:	Systematic Software
In-Reply-To:	<CAAvCNcByRFaUeWPhm4F_Mxbytw0W0xARymy+7Ch5kp02oszQsw@mail.gmail.com>
X-Stat-Signature:	zm3jwguhcackk3umubqgh6fi8ackyi4g
X-Rspamd-Server:	rspamout03
X-Spam-Status:	No, score=-2.0 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS,
	RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_PASS,
	SPF_PASS, TXREP,
	UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.6
X-Rspamd-Queue-Id:	4E62D20010
X-Session-Marker:	427269616E2E496E676C69734053797374656D6174696353572E61622E6361
X-Session-ID:	U2FsdGVkX1/py1nXGmsqJGbLZ4OK6wGh1a3cmoLl1kA=
X-HE-Tag:	1714108981-800363
X-HE-Meta:	U2FsdGVkX1/rSsCu5XQdRFbv7Qr4V/RMSvbREuWz+kN7nNk/pdPxTz9xrQ7RK37a8DGq1jJMt735JJhxhAPYLGicADJfHOVif+892oE1mPMQAhy1srgaNwPw9LkxwMDIc1feTC905cllBx/0iFovVIowOZPiowJV+v+R50Vq6UE3ezIk+q6tRq54giUi82M13g0Hx77j954SE1NYNxg9fQqCrtELj4HwJMHPMZViXjw2WQYx+80IygfD25Mnv77Nt+4aws+ulNp9iTVRACKIJQfuq1BWtvIZ4/xpNAxDSQU2xg34cFyIwJ/sK7qLXLZSrzNQX8Vf2fHcWm/F+vjTQ5B7zYO5EBiSeCxDmTBC75Rw2x3xuLLQgw==
X-Spam-Checker-Version:	SpamAssassin 3.4.6 (2021-04-09) on
	server2.sourceware.org
X-BeenThere:	cygwin AT cygwin DOT com
X-Mailman-Version:	2.1.30
List-Id:	General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Unsubscribe:	<https://cygwin.com/mailman/options/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=unsubscribe>
List-Archive:	<https://cygwin.com/pipermail/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe:	<https://cygwin.com/mailman/listinfo/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
From:	Brian Inglis via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	cygwin AT cygwin DOT com
Cc:	Brian Inglis <Brian DOT Inglis AT SystematicSW DOT ab DOT ca>
Errors-To:	cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com
Sender:	"Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>
X-MIME-Autoconverted:	from base64 to 8bit by delorie.com id 43Q5NR8u2018003

On 2024-04-25 19:45, Dan Shelton via Cygwin wrote:
> On Mon, 22 Apr 2024 at 07:01, Brian Inglis via Cygwin wrote:
>> On 2024-04-21 17:24, Dan Shelton via Cygwin wrote:
>>> On Sat, 20 Apr 2024 at 05:37, Brian Inglis via Cygwin wrote:
>>>>> 2. If I have Administrator rights, is there a way in /proc where I can
>>>>> /bin/ls -la  or /bin/find -ls all those DOS namespaces and soft links
>>>>> to the real devices?
>>>>
>>>> Cygwin exposes these MS Windows Executive Object Manager subsystem resource
>>>> objects under /proc/sys/ and object namespaces are per session under
>>>> /proc/sys/Sessions/ you have e.g.
>>
>>>> $ ls -glo /proc/sys/Sessions/BNOLINKS/
>>>> total 0
>>>> lr--r--r-- 1 0 Apr 19 21:23 0 -> /proc/sys/BaseNamedObjects
>>>> lr--r--r-- 1 0 Apr 19 21:23 1 -> /proc/sys/Sessions/1/BaseNamedObjects
>>>>
>>>> so each session has its own set of BaseNamedObjects, which you can list with
>>>> appropriate permissions, or using a tree browser.
>>
>>> Now where does the "1" in /proc/sys/Sessions/1/BaseNamedObjects come
>>> from? Is there a Cygwin or Win32 API for that?
>>
>> It's the MS Windows session number for the first user session.
>> You can access them using Cygwin or MS Windows directory lookups or tree
>> browsers, as I said.
>> Search microsoft.com for Windows sessions for details about MS Windows APIs.
> 
> Windows has multiple session apis (terminal, logon, ...), which is
> used for the DOS namespace?

There really does not appear to be a "DOS" namespace, rather there are a bunch 
of legacy object names in the namespaces which may be used by console and GUI 
programs to access and operate on the underlying objects, possibly also using 
legacy APIs.

>>>> Under MS Windows you can use Sysinternals WinObj64 to browse the hierarchy and
>>>> objects.
>>>
>>> What is that?
>>
>> If you do not yet know that, perhaps you should not yet be digging into these MS
>> Windows Executive subsystem objects.
>>
>> Some of these questions seem very abstract - are these academic questions or
>> projects?
> 
> Building knowledge, learning, and debugging actual code.

Have a look at the object hierarchies either using a Cygwin tree browser or the 
winobj64 object browser to see what is actually out there and their properties.

The Cygwin all-volunteer spare time project's interest is in using newlib libc 
and Windows APIs to provide Unix functionality, to relevant POSIX standards if 
available and appropriate.

For anything else you should consult the available project documentation in the 
cygwin-doc package or online, in the newlib-cygwin/winsup/cygwin C++ source code 
providing the emulation, any MS Windows documentation that the vendor cares to 
make available, and perhaps other MS Windows emulation based open source 
projects like Wine, mingw64, msys2, etc.

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry

-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple

- Raw text -