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:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; q=dns; s=
	default; b=RiJBsmNK4jWHH+ttRWPwvJhcQepMW9obyhP+LNrlF/NfCHEbjSxt+
	iJWIq3fgdeTuKPIDdlovd8W1KuF2OUAzF1HCkq0621D/358cG2o0Z/hfHl+s/HAD
	l8h5/QIB4YQPpCTtvaiL5KHFPlUPWY0OOndQFZ5WamXQA1G4/ZGz9U=
Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm
Sender: cygwin-owner@cygwin.com
Mail-Followup-To: cygwin@cygwin.com
Date: Wed, 18 Nov 2015 18:55:03 +0100
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: Symlink targets dereferenced when winsymlinks:native
Message-ID: <20151118175503.GT6402@calimero.vinschen.de>
Reply-To: cygwin@cygwin.com
Mail-Followup-To: cygwin@cygwin.com
References: <564BAA1A.8000703@gmail.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;	protocol="application/pgp-signature"; boundary="AptwxgnoZDC4KQWS"
Content-Disposition: inline
In-Reply-To: <564BAA1A.8000703@gmail.com>
User-Agent: Mutt/1.5.23 (2014-03-12)

--AptwxgnoZDC4KQWS
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Nov 17 23:28, David Macek wrote:
> Hi.
>=20
> I went through the UG looking for differences between regular Cygwin
> symlinks and NTFS symlinks, but couldn't find this documented. It
> seems that when using winsymlinks:native, the target path is first
> dereferenced before storing it in the link.

It's a result of the native symlink being a Windows path.  The
ultimate conversion from POSIX to Windows path dereferences all
symlinks.

> That doesn't happed when
> using regular symlink files. Is this behaviour intentional / known?
>=20
> If it matters, the use case is `ln -sf /proc/self/fd /dev/fd`.

It matters.  This is a bug in Cygwin, a missing test in fact.  It should
never allow to create native symlinks to targets which only exist inside
of Cygwin.  Consider that /proc/self/fd has no meaning to non-Cygwin
processes at all.  Creating this symlink as native symlink doesn't make
any sense, they should always be generated as Cygwin-only symlinks.

Thanks for the report, I'll apply a matching patch.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

--AptwxgnoZDC4KQWS
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=tIAW
-----END PGP SIGNATURE-----

--AptwxgnoZDC4KQWS--