From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: Symlink targets dereferenced when winsymlinks:native
Date: Wed, 18 Nov 2015 17:55:00 -0000 [thread overview]
Message-ID: <20151118175503.GT6402@calimero.vinschen.de> (raw)
In-Reply-To: <564BAA1A.8000703@gmail.com>
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On Nov 17 23:28, David Macek wrote:
> Hi.
>
> 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?
>
> 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
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Maintainer cygwin AT cygwin DOT com
Red Hat
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next prev parent reply other threads:[~2015-11-18 17:55 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-17 22:28 David Macek
2015-11-18 17:55 ` Corinna Vinschen [this message]
2015-11-18 18:13 ` David Macek
2015-11-18 19:48 ` Corinna Vinschen
2015-11-18 20:01 ` Warren Young
2015-11-18 20:07 ` Corinna Vinschen
2015-11-19 18:53 ` David Macek
2015-11-19 19:36 ` Nellis, Kenneth
2015-11-19 21:17 ` David Macek
2015-11-20 9:26 ` Corinna Vinschen
2015-11-24 21:48 ` David Macek
2015-11-26 12:02 ` Corinna Vinschen
2015-11-29 14:10 ` David Macek
2015-11-29 17:10 ` Corinna Vinschen
2015-11-20 9:29 ` Corinna Vinschen
2015-11-24 19:51 ` David Macek
2015-11-25 3:20 ` Linda Walsh
2015-11-25 14:59 ` David Macek
2015-11-26 11:53 ` Another reason to not corrupt winnative symlinks: :currenly, they are linux-CIFS compat. Cygwin's are not Linda Walsh
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