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Date:	Wed, 21 Oct 2015 14:43:13 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Error accessing mapped drive >2TB?
Message-ID:	<20151021124313.GA15262@calimero.vinschen.de>
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On Oct 21 15:33, Andrey Repin wrote:
> Greetings, Corinna Vinschen!

Your mailer is breaking the history, btw.  Could you reconfigure so the
"blah wrote:" header is preserved for each mail in the thread you still
quote?  Thanks.

> > Probably because of the above
>=20
> >   symlink_info::check_reparse_point: NtFsControlFile(FSCTL_GET_REPARSE_=
POINT)
> >   failed, 0xC0000275
>=20
> > This is in fact a weird error code in this scenario.
>=20
> > Consider that symlink_info::check_reparse_point is *only* called, if the
> > file to check (here "P:\") has the FILE_ATTRIBUTE_REPARSE_POINT flag
> > set.  So from the Windows perspective it is certainly a reparse point.
>=20
> > Cygwin checks the flag to allow evaluating of reparse points as symlink=
s.
> > If the flag is set, it calls symlink_info::check_reparse_point which in
> > turn calls
>=20
> >   status =3D NtFsControlFile (..., FSCTL_GET_REPARSE_POINT, ...);
>=20
> > to fetch the target information the reparse point points to, in POSIX
> > terms the symlink target.  But *this* call returns a status of 0xC00002=
75,
> > which means STATUS_NOT_A_REPARSE_POINT.  And since it's totally unexpec=
ted
> > that NtFsControlFile fails on a reparse point, the code sets errno to E=
IO.
>=20
> > Hang on.
>=20
> > The FILE_ATTRIBUTE_REPARSE_POINT flag is set but when calling a function
> > to fetch the reparse data it's no reparse point anymore?  How dumb is
> > that?
>=20
> That's=E2=80=A6 interesting.
> Windows does not allow for reparse points to networked locations.
> Symlinks all right, directory junctions no.

Fine, but then the question is, why is the FILE_ATTRIBUTE_REPARSE_POINT
flag set in the first place?


Corinna

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

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