X-Recipient: archive-cygwin AT delorie DOT com
DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:cc:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; q=dns; s=
	default; b=r/KvY1AOP+gL09ROHWcMq0xN6AxDOfH47Arm5GhiycvIFrvlebFIh
	oCe9ORTahHAYIrsirAAmopQOiF2rOxOKgR2+prnB69rD0pYSCQ1vtwejdE7/M8Dk
	9LVnakZEAppbf/8U/yWnqEzIczPVdx/UujNjvuQ4uvilzrLusU/Qj8=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:cc:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; s=default;
	 bh=R/hut8aZhSr2sCA2YLi83DC6khc=; b=wfYjnEPkoYELNU29C687zIWormtE
	OCfT7w/jrjYIv9xiJo/1UFpEhoXVMdCxKdKOptCDCPdLWmKdJtCuQp+QuXBBPJWo
	mqxcbBDn0ZSbrytUolWQyHxSI7GNbak9jI4+MH6Mtdg13rSOoSeEpARwVIP4egGy
	SJZoW3nW0N+dWcg=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Authentication-Results: sourceware.org; auth=none
X-Spam-SWARE-Status: No, score=-104.9 required=5.0 tests=AWL,BAYES_50,GOOD_FROM_CORINNA_CYGWIN,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 spammy=mounted, sde, displays, aziz
X-HELO: mout.kundenserver.de
Date: Mon, 2 Mar 2020 17:56:34 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: Hashim Aziz <hashaziz AT hotmail DOT com>
Cc: cygwin <cygwin AT cygwin DOT com>
Subject: Re: cat /proc/partitions shows only devices, not partitions
Message-ID: <20200302165634.GT4045@calimero.vinschen.de>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: Hashim Aziz <hashaziz AT hotmail DOT com>,	cygwin <cygwin AT cygwin DOT com>
References: <DB7PR01MB51934E03BFDFE94142F1966FD5E60 AT DB7PR01MB5193 DOT eurprd01 DOT prod DOT exchangelabs DOT com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;	protocol="application/pgp-signature"; boundary="pgNHpQPJFoUYTAIP"
Content-Disposition: inline
In-Reply-To: <DB7PR01MB51934E03BFDFE94142F1966FD5E60@DB7PR01MB5193.eurprd01.prod.exchangelabs.com>

--pgNHpQPJFoUYTAIP
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Mar  1 21:16, Hashim Aziz wrote:
> This was an issue that I had previously in September of last year and
> sent the issue to this mailing list ("win-mounts no longer displays
> anything when doing "cat /proc/partitions") but the issue stopped
> occurring before I could get around to diagnosing it. This issue has
> now re-occurred and this time it seems permanent. When I run:
>=20
> $ cat /proc/partitions
> major minor  #blocks  name   win-mounts
>=20
>     8     0         0 sda
>     8    16         0 sdb
>     8    32         0 sdc
>     8    48         0 sdd
>     8    64         0 sde
>     8    80         0 sdf
>=20
> ...I see nothing at all in the win-mounts column. This makes it
> impossible for me to see which Windows drive letter maps to which
> /dev/sdX entry. On closer inspection, this seems to be because I'm not
> actually seeing any partitions of my drives, even though there are
> many - for example, I see /dev/sda but no /dev/sda1 or /dev/sda2, and
> because it's the partitions that are mounted, it's this that seems to
> result in me seeing nothing in the win-mounts column. I'm running
> Cygwin on Windows 7 (yes I'm aware it's EOL).

Fortunately I just started Windows 7 for another thread here, so I
gave it a try myself:

  $ uname -a
  CYGWIN_NT-6.1 vmbert764 3.1.4(0.340/5/3) 2020-02-19 08:49 x86_64 Cygwin
  $ id -G | grep -Eq '\<544\>' && echo elevated || echo non-elevated
  non-elevated
  $ cat /proc/partitions
  major minor  #blocks  name   win-mounts

      8     0  54525952 sda
      8     1    102400 sda1
      8     2  54420480 sda2   C:\

So, https://cygwin.com/acronyms/#WJFFM

This appears to be a local phenomenon only, either some permission
problem, or some BLODA, a life virus scanner or something.

Two questions come to mind:

- Does it work in an elevated shell?

- If you run this under strace, does it show anything unusual?
  We could take a look if you call

    strace -o cat.trace cat /proc/partitions

  and send the cat.trace file here (assuming it still doesn't work).


Corinna

--=20
Corinna Vinschen
Cygwin Maintainer

--pgNHpQPJFoUYTAIP
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=/snI
-----END PGP SIGNATURE-----

--pgNHpQPJFoUYTAIP--