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Date: Thu, 5 Dec 2019 13:52:27 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: 3.0.7(0.338/5/3): Possible reference to Developer's instances of dev files in deployed build
Message-ID: <20191205125227.GH3337@calimero.vinschen.de>
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References: <20191204210222 DOT GA3578 AT shackleton DOT labs DOT net> <754a577d-dac1-16e0-56a7-8be8ab1d424c AT cornell DOT edu> <20191205091807 DOT GG3337 AT calimero DOT vinschen DOT de>
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On Dec  5 10:18, Corinna Vinschen wrote:
> On Dec  4 21:41, Ken Brown wrote:
> > The difference is that NtCreateFile doesn't fail with=20
> > STATUS_OBJECT_NAME_NOT_FOUND in the other cases, so the code containing=
 the=20
> > assertion doesn't get run.
> >=20
> > BTW, I just tried the following on my system:
> >=20
> > $ ls z:\\
> > ls: cannot access 'z:\': No such file or directory
> >=20
> > strace shows that NtCreateFile fails with STATUS_OBJECT_PATH_NOT_FOUND =
in this=20
> > case, so again the code containing the assertion is not run.
> >=20
> > To be continued...
>=20
> So, maybe we could just check if ext_here - path > 2, i. e.
>=20
>     if (status =3D=3D STATUS_OBJECT_NAME_NOT_FOUND && ext_here - path > 2)
>=20
> That excludes "X:" paths from this special handling for DOS-only drives.

The only problem here is that I can't reproduce the assertion failure.

I created a Samba share on a Linux machine, mounted it as drive Z:,
and set the "always available offline" property of the drive.

After syncing I accessed the drive, then I stopped Samba on the Linux
server to switch the drive into offline mode.  Then I ran `ls -la
/cygdrive/z'.  After a few secs I got the offline content cached on the
local machine.  I also tried `ls -la /cygdrive/' and `cd /cygdrive; ls
-la', but every time I got the expected output.  In the cases I tried
to list /cygdrive itself I got the expected output, all drives except
the z drive.

I tried this with Cygwin 3.1.0-0.8.x86_64 on Windows 7 and Windows 10.

So either there's something very special in Wilfed's setup, or I'm
doing something wrong.  Which is it?


Corinna

--=20
Corinna Vinschen
Cygwin Maintainer

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