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Subject:	Re: Symlink targets dereferenced when winsymlinks:native
To:	cygwin AT cygwin DOT com
References:	<564BAA1A DOT 8000703 AT gmail DOT com> <20151118175503 DOT GT6402 AT calimero DOT vinschen DOT de>
From:	David Macek <david DOT macek DOT 0 AT gmail DOT com>
Message-ID:	<564CBFCC.4020605@gmail.com>
Date:	Wed, 18 Nov 2015 19:13:32 +0100
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On 18. 11. 2015 18:55, Corinna Vinschen wrote:
> 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.
>=20
> It's a result of the native symlink being a Windows path.  The
> ultimate conversion from POSIX to Windows path dereferences all
> symlinks.

Should that behaviour stay? If not, I can send a patch for the UG.

>> 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`.
>=20
> 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.
>=20
> Thanks for the report, I'll apply a matching patch.

Cool.

--=20
David Macek


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