New subject: [Bug 47813] Itch.io: Warning or error when launching a game (GetFileInformationByHandleEx for FileAttributeTagInfo unimplemented)

26 Sep 2019


      https://bugs.winehq.org/show_bug.cgi?id=47813
Bug ID: 47813
           Summary: Itch.io: Warning or error when launching a game
                    (GetFileInformationByHandleEx for FileAttributeTagInfo
                    unimplemented)
           Product: Wine
           Version: 4.16
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: wine-bugs@winehq.org
          Reporter: theristhewolf@gmail.com
      Distribution: ---
The Windows version of the Itch.io desktop app (which can be downloaded as
itch-windows-amd64.zip from https://fasterthanlime.itch.io/itch ) generates a
warning message such as the following when launching most titles:
"An error occurred while launching [APP].  The message we got was: While doing
auto prereqs: GetFileInformationByHandleEx
[BINARY_LOCATION_IN_VIRTUAL_C_DRIVE]: Call not implemented."
With these titles, the game can be launched normally by clicking the "Continue"
button.  However, with at least one Itch game (and, presumably, any Itch game
that only works if launched via the Itch client), the error message instead
reads as follows:
"An error occurred while launching [APP].  GetFileInformationByHandleEx
[BINARY_LOCATION_IN_VIRTUAL_C_DRIVE]: Call not implemented."
In this case, there is no "Continue" button to click (the bottom right corner
of the window instead has an "OK" button, which dismisses the message and
proceeds to a Itch bug submission window if a checkbox is enabled, as well as
an "Open folder in explorer" button).
This issue was originally reported as a bug for the Itch desktop client (see
https://github.com/itchio/itch/issues/2324 ), and a developer for that project
has stated that the described behavior occurs due to Wine's partial
implementation of the GetFileInformationByHandleEx function (specifically, for
the case when the class passed into the function is FileAttributeTagInfo).
Since this is the function call that Go generates when compiling an os.Stat
function call performed on a file returned by os.Open, the responding Itch
developer expressed a preference for the missing functionality in Wine to be
implemented due to this issue's potential impact on other Windows applications
that were written in Go.  To that end, said developer has generated a short Go
code snippet (viewable at
https://gist.github.com/fasterthanlime/ec8177b114fa9f711d90b95b49a0e236 ) that
tests the os.Stat and os.Open functions.
This issue has been originally produced in Lutris's variant of Wine version
4.12.1-x86_64.  I have attempted to reproduce the issue on a system-wide
install of Wine 4.16 (as installed on Linux Mint 19.1 via the winehq-devel
package), but I have not been able to get the Itch client's window to display
anything other than a blank black box when running Itch this way (presumably,
there's either a mistake that I've been overlooking, a setup step that Lutris
does that I'm missing, a workaround that Lutris does that I'm not aware of, or
a bugfix in Lutris's flavor of Wine that isn't mainlined).
I'm hoping, due to the specificity of the bug's identification and the
verification of the fact that GetFileInformationByHandle remains a stub in the
main Wine project's master branch, that the lack of reproduction in the
development version of vanilla Wine will be tolerated for this report.  If not,
I can continue trying to flail at my efforts to reproduce the bug without the
use of Lutris.
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[Bug 47813] New: Itch.io: Warning or error when launching a game (GetFileInformationByHandleEx for FileAttributeTagInfo unimplemented)