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Subject:	Re: symbolic linls
To:	cygwin AT cygwin DOT com
References:	<no1t0v$gs5$1 AT blaine DOT gmane DOT org> <336b469f-29ad-e319-62d6-975ced78f512 AT gmail DOT com> <828539974 DOT 20160810041631 AT yandex DOT ru>
From:	David Macek <david DOT macek DOT 0 AT gmail DOT com>
Message-ID:	<7bb4f190-d9a6-f7ab-d278-95cc945cd5b8@gmail.com>
Date:	Wed, 10 Aug 2016 10:31:46 +0200
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On 10. 8. 2016 3:16, Andrey Repin wrote:
> Greetings, David Macek!
>=20
>>> As i understand Cygwin will soon no longer support Windows XP resp.
>>> 2003. This means that only Windows versions with native symbolic link
>>> functionality will be supported after that. Would it be possible to use
>>> only native symbolic links throughout esp. during setup.exe?
>=20
>> Short answer: No.
>=20
>> Long answer:
>=20
>> There are limitations to NTFS symlinks, other than OS support, that make
>> them incompatible with POSIX symlinks. See
>> <https://cygwin.com/cygwin-ug-net/using.html#pathnames-symlinks> and
>> <https://github.com/git-for-windows/git/wiki/Symbolic-Links> for more in=
formation.
>=20
> There's limitations, yes. But what do you mean by "incompatibility" ?

I mean differences between how NTFS symlinks work and how POSIX symlinks (t=
hat Cygwin apps expect) work. It's described on the Git-for-Windows page I =
linked. Quoting:

> You need the SeCreateSymbolicLinkPrivilege privilege, which is by default=
 assigned only to Administrators but can be assigned to normal users using =
Local Security Policy (or via Active Directory). Note that regardless of pr=
ivilege assignment, members of the Administrators group will also require U=
AC elevation.

> Symbolic links on remote filesystems are disabled by default (call fsutil=
 behavior query SymlinkEvaluation to find out)

> Symbolic links will only work on NTFS, not on FAT

> Windows' symbolic links are typed: they need to know whether they point t=
o a directory or to a file

--=20
David Macek


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