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From:	David Allsopp <David DOT Allsopp AT cl DOT cam DOT ac DOT uk>
To:	The Cygwin Mailing List <cygwin AT cygwin DOT com>
Subject:	RE: Cygwin setup writing incorrect symlinks for native
Thread-Topic:	Cygwin setup writing incorrect symlinks for native
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Date:	Sun, 9 Jan 2022 09:35:45 +0000
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Jon Turney wrote:
> On 06/01/2022 16:45, David Allsopp wrote:
> > Jon Turney wrote:
> >> On 06/01/2022 10:46, David Allsopp wrote:
> >>> Running Cygwin setup 2.912 with --symlink-type native (or
> >>> CYGWIN=winsymlinks:native) is not correctly translating all symlinks.
> >>> A default install has these faulty ones:
> >>>
> >>> /etc/pki/tls/cert.pem ->
> >>> \??\/etc\pki\ca-trust\extracted\pem\tls-ca-bundle.pem
> >>> /etc/pki/tls/certs/ca-bundle.crt ->
> >>> \??\/etc\pki\ca-trust\extracted\pem\tls-ca-bundle.pem
> >>> /etc/pki/tls/certs/ca-bundle.trust.crt ->
> >>> \??\/etc\pki\ca-trust\extracted\openssl\ca-bundle.trust.crt
> >>> /etc/ssl/certs -> \??\/etc\pki\tls\certs /lib/security/cacerts ->
> >>> \??\/etc\pki\ca-trust\extracted\java\cacerts
> >>> /usr/share/doc/groff-1.22.4/pdf/mom-pdf.pdf ->
> >>> \??\/usr\share\doc\groff-1.22.4\examples\mom\mom-pdf.pdf
> >>
> >>
> >> Thanks for reporting this.
> >>
> >> Yes, it seems this is messed up where the target of the symlink is an
> >> absolute path.
> >>
> >> I've uploaded setup 2.913 with an attempted fix.
> >>
> >>     https://cygwin.com/setup/setup-2.913.x86_64.exe
> >>     https://cygwin.com/setup/setup-2.913.x86.exe
> >>
> >> Please try that (you'll have to reinstall the effected packages), and
> >> see if it improves things for you?
> >
> > Thank you! This fixes it for the Cygwin side, although the symlinks are
> > still technically not right from the Windows side. They're still showing
> > up prefixed \??\.
> >
> > It's an age since I mucked around with those functions - IIRC the API
> > function for writing them adds the \??\ itself and doesn't expect it
> > to have been supplied? However, when you read the reparse point you
> > have to remember to remove it yourself because who needs consistency
> > :o)
> 
> Thanks for testing.  It seems I still didn't have this quite right and
> these symlinks just happened to work for cygwin, but not native tools.
> 
> Please try
> 
>    https://cygwin.com/setup/setup-2.914.x86_64.exe
>    https://cygwin.com/setup/setup-2.914.x86.exe

I'm afraid that's just changed the \??\ to \\?\ on those symlinks.

All best,


David

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