Bug 131388 - File save fails when network document is opened on another machine
Summary: File save fails when network document is opened on another machine
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: LibreOffice (show other bugs)
Version:
(earliest affected)
7.0.0.0.alpha0+
Hardware: All All
: medium normal
Assignee: Not Assigned
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: File-Lock
  Show dependency treegraph
 
Reported: 2020-03-17 14:23 UTC by Samuel Mehrbrodt (allotropia)
Modified: 2024-05-02 03:15 UTC (History)
3 users (show)

See Also:
Crash report or crash signature:


Attachments
Combinations tested (1.05 KB, text/plain)
2020-03-17 14:23 UTC, Samuel Mehrbrodt (allotropia)
Details

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Description Samuel Mehrbrodt (allotropia) 2020-03-17 14:23:54 UTC
Created attachment 158752 [details]
Combinations tested

1. Put a document on a Windows file share
2. Open that document on a Linux machine
3. Open the same document on a Windows machine (choose read-only in the dialog)
4. Try to save the document on Linux

Result: 
Saving fails

Expected:
Saving should work, since Linux has exclusive write access to that document

Note: This has something to do with system file locking. When disabling the option "UseDocumentSystemFileLocking" on the Windows machine, saving on Linux works fine.

Attached the test protocol.
Comment 1 Mike Kaganski 2020-09-04 08:49:20 UTC
So a guess would be that when opening it read-only on Windows, LibreOffice doesn't use correct mode (read-only, shared) - see CreateFile's dwDesiredAccess and dwShareMode [1]. Note that from Windows share PoV, the file is not open from Linux side, it was atomically opened when read, then was closed, than will be attempted to open for writing later (IIUC the mechanics of Linux file operations). LO only detects the opened state using lock file.

[1] https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilew
Comment 2 Xisco Faulí 2021-11-23 10:57:12 UTC
Hello Samuel,
is this issue still reproducible with a master build ?
Comment 3 Xisco Faulí 2022-05-02 12:05:34 UTC
(In reply to Xisco Faulí from comment #2)
> Hello Samuel,
> is this issue still reproducible with a master build ?

Setting to NEEDINFO
Comment 4 Samuel Mehrbrodt (allotropia) 2022-05-02 13:27:43 UTC
(In reply to Xisco Faulí from comment #2)
> Hello Samuel,
> is this issue still reproducible with a master build ?

I would assume so, until someone proves the opposite.

It has all info needed to reproduce, so not NEEDINFO.
Comment 5 QA Administrators 2024-05-02 03:15:12 UTC
Dear Samuel Mehrbrodt (allotropia),

To make sure we're focusing on the bugs that affect our users today, LibreOffice QA is asking bug reporters and confirmers to retest open, confirmed bugs which have not been touched for over a year.

There have been thousands of bug fixes and commits since anyone checked on this bug report. During that time, it's possible that the bug has been fixed, or the details of the problem have changed. We'd really appreciate your help in getting confirmation that the bug is still present.

If you have time, please do the following:

Test to see if the bug is still present with the latest version of LibreOffice from https://www.libreoffice.org/download/

If the bug is present, please leave a comment that includes the information from Help - About LibreOffice.
 
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