[Bug 48266] New: Regression with redirecting stdout from native app

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48266

Bug ID: 48266
           Summary: Regression with redirecting stdout from native app
           Product: Wine
           Version: unspecified
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 65932
  --> https://bugs.winehq.org/attachment.cgi?id=65932
demo program

A Windows program calls a native Linux command and redirects stdout so that it
can process the output. This used to work in older Wine versions, e.g. 1.6.2
but is not working in newer versions.

It seems that instead of writing to a pipe (that the Windows program could
read) the output goes directly to Wine's stdout.

Use case: a Wine-aware program can use Linux commands to check if the data is
stored on an encrypted drive/folder.

The attached program demonstrates the problem. When passing "1" as parameter it
will call "/bin/ls -al", and redirect and read the output. When running with
newer Wine versions it can clearly be seen that the program reads 0 bytes from
the pipe.

When passing "2" as parameter it calls the Windows command "dir" and redirects
and reads the output. This works correctly.

The demo executable and the source code is available at
https://gist.github.com/ermshiperete/8de3905d364cee362a90cacc03e7c358.

A second Windows program, available at
https://gist.github.com/ermshiperete/1e4cb1bc32e5175c369ec3d0d594cef8, can be
used in `git bisect`. It executes "/bin/uname" and compares the redirected
output with "Linux". Exit code is 0 if the program read "Linux", otherwise 1.

[Bug 48266] Regression with redirecting stdout from native app

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48266

--- Comment #1 from [e-mail] ---
Bisecting suggests that commit d56c576bc1fe5be78e98c9972343b5093e141935 is the
first commit that introduces this problem.

[Bug 48266] Regression with redirecting stdout from native app

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48266

[e-mail] changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unspecified                 |4.21

[Bug 48266] Regression with redirecting stdout from native app

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48266

--- Comment #2 from [e-mail] ---
Oops, no, d56c576bc1fe5be78e98c9972343b5093e141935 isn't really the problem. My
test script was wrong. This commit crashes when running the demo app. I'll try
again...

[Bug 48266] Regression with redirecting stdout from native app

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48266

Austin English  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |regression

[Bug 48266] Regression with redirecting stdout from native app

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48266

--- Comment #3 from Alexandre Julliard  ---
The problem is that Win32 pipes are no longer backed by a Unix fd, so they
can't be passed to a Unix app.

[Bug 48266] Regression with redirecting stdout from native app

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48266

--- Comment #4 from Gijs Vermeulen  ---
Bug 44393 might be related.

[Bug 48266] Regression with redirecting stdout from native app

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48266

Alexandre Julliard  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |DUPLICATE
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #5 from Alexandre Julliard  ---
Indeed, it's the same issue.

*** This bug has been marked as a duplicate of bug 44393 ***

[Bug 48266] Regression with redirecting stdout from native app

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48266

Alistair Leslie-Hughes  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #6 from Alistair Leslie-Hughes  ---
Closing Duplicate