Total Commander

dsscicin · Junior Member Joined: 03 Nov 2009 Posts: 19

Win 8 + TC b22, exe in hardlink directory can't run from TC, however, no problem when running from win8 explorer.

JOUBE · Senior Member Joined: 08 Jul 2004 Posts: 447

MVV

JOUBE · Senior Member Joined: 08 Jul 2004 Posts: 447

ghisler(Author) · Posted: Mon Mar 05, 2012 9:11 am Post subject:

So what exactly is the problem? How can I reproduce it? I have installed both the developer preview and the consumer preview, both under VirtualBox.
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dsscicin · Junior Member Joined: 03 Nov 2009 Posts: 19

I'm sry that I did not describle the problem exactly.
For example:
there is a derectory
D:\Program Files\cpu-z
then cmd to mklink
mklink /J D:\cpu-z "D:\Program Files\cpu-z"
So now
D:\cpu-z <<===>> "D:\Program Files\cpu-z"
However, it fails to run "D:\cpu-z\cpuz.exe" from TC,
OK to run "D:\Program Files\cpu-z\cpuz.exe" from TC,
Both OK to run "D:\cpu-z\cpuz.exe" and "D:\Program Files\cpu-z\cpuz.exe" from system explorer.
(I mean, in the very directory, press ENTER to run cpuz.exe)

ghisler(Author) · Posted: Tue Mar 06, 2012 2:37 am Post subject:

TC just calls ShellExecuteEx with the program name, so maybe ShellExecuteEx is faulty on Windows 8? Or maybe cpu-z fails to find its files when started this way? Sorry, I can only speculate here...
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ghisler(Author) · Posted: Fri Mar 09, 2012 4:26 am Post subject:

I have just tested it now:
You found a real bug in Windows 8! Due to the hard link, it seems to assume that the file is located on the Internet - not only that, it seems to think that it's on a restricted site! If you right click on the program and choose "Open", you will get such a security warning!

To fix it, run Internet Explorer, open settings, security, custom level. Then choose "Launching applications and unsafe files (not secure) - Enable. Unfortunately IE8 then freaks out every time you start it, so only do it if you use some other browser like Firefox or Chrome.

This bug seems to exist in function ShellExecuteEx and right click menu only, the Explorer doesn't seem to have this bug.

Now the question is how to inform Microsoft about this bug - and will they listen at all? I really doubt it. Sad

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JoSch · Junior Member Joined: 04 Jan 2008 Posts: 6

The official way to report Bugs is http://connect.microsoft.com/
Will they listen? Who knows...

ghisler(Author) · Posted: Sun Mar 18, 2012 10:36 am Post subject:

Probably not, or maybe if I can write a sample program with .Net.

Anyway, I will try to write a workaround myself: If Windows 8 is detected, I will check all parts of the current path whether they contain any hard links, and if yes, I will resolve them.
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Flint · Posted: Tue Apr 17, 2012 5:18 am Post subject:

I can confirm that now TC can launch programs from junctions by substituting the real path (tested in beta 23 for reproducing the problem and beta 25 for testing the fix).

However, on the Russian forum a user discovered that volume mount points are processed incorrectly and TC tries to start an EXE with substituted path that includes the volume id (like "Volume{f9ce2d52-870a-11e1-a110-5406a67e74fc}"), and of course there is no such path, so program fails to run. I tested it and can see that volume mount points are not affected by the Windows bug with security restrictions, so I think TC should not substitute mount points, only junctions and symlinks.
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Using TC 8.01 / Win7 x64 SP1

ghisler(Author) · Posted: Wed Apr 18, 2012 8:29 am Post subject:

2Flint
Can you give me an example of a path returned by volume mount points? This would make it easier for me to exclude them.
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MVV · Posted: Wed Apr 18, 2012 9:17 am Post subject:

Christian, you can make a mount point via command-line tool mountvol. Mount point uses reparse point type IO_REPARSE_TAG_MOUNT_POINT like junction but differs in path form (contains just volume GUID instead of full folder path):

ghisler(Author) · Posted: Fri Apr 20, 2012 10:39 am Post subject:

Thanks!
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Flint · Posted: Sat May 12, 2012 8:02 am Post subject:

Though history claims to have fixed this bug, it's not really fixed. For example, double-click on a ZIP file displays the message: