Opened 5 years ago

Last modified 22 months ago

#30603 closed Bug

Stored file locking issue when using Django on Windows and youtube_dl package is installed — at Initial Version

Reported by: ManicEatsWorld Owned by: nobody
Component: File uploads/storage Version: dev
Severity: Normal Keywords:
Cc: Kevin Christopher Henry Triage Stage: Unreviewed
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no

Description

When using the FileSystemStorage.save() functions in a Windows installation of Django with the ​youtube_dl package installed, an error is thrown in locks.py upon trying to unlock the newly stored file:

  Internal Server Error: /
Traceback (most recent call last):
  File "<<Project base directory removed for privacy>>\venv\lib\site-packages\django\core\files\move.py", line 61, in file_move_safe
    locks.lock(fd, locks.LOCK_EX)
  File "<<Project base directory removed for privacy>>\venv\lib\site-packages\django\core\files\locks.py", line 80, in lock
    ret = LockFileEx(hfile, flags, 0, 0, 0xFFFF0000, byref(overlapped))
ctypes.ArgumentError: argument 6: <class 'TypeError'>: expected LP_OVERLAPPED instance instead of pointer to OVERLAPPED

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<<Project base directory removed for privacy>>\venv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "<<Project base directory removed for privacy>>\venv\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "<<Project base directory removed for privacy>>\venv\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "<<Project base directory removed for privacy>>\GenreClassificationWeb\webClassification\views.py", line 29, in upload
    name = fs.save(uploaded_file.name, uploaded_file)
  File "<<Project base directory removed for privacy>>\venv\lib\site-packages\django\core\files\storage.py", line 52, in save
    return self._save(name, content)
  File "<<Project base directory removed for privacy>>\venv\lib\site-packages\django\core\files\storage.py", line 261, in _save
    file_move_safe(content.temporary_file_path(), full_path)
  File "<<Project base directory removed for privacy>>\venv\lib\site-packages\django\core\files\move.py", line 67, in file_move_safe
    locks.unlock(fd)
  File " <<Project Directory>>\venv\lib\site-packages\django\core\files\locks.py", line 86, in unlock
    ret = UnlockFileEx(hfile, 0, 0, 0xFFFF0000, byref(overlapped))
ctypes.ArgumentError: argument 5: <class 'TypeError'>: expected LP_OVERLAPPED instance instead of pointer to OVERLAPPED

Removing the youtube_dl package does immediately resolve this issue. Sadly, youtube-dl is necessary for this project due to a lack of working cross-platform alternatives.

This issue has been recreated with a Windows 10 and a Windows 7 machine using different VENVs.

I do believe this is a bug and will cross-post an issue at the youtube-dl ​issue page.

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