[Weechat-dev] [bug #36383] Config files occasionally truncated (zero-length) after crash.

[Mateusz Poszwa]

URL:
  <http://savannah.nongnu.org/bugs/?36383>

                 Summary: Config files occasionally truncated (zero-length)
after crash.
                 Project: WeeChat
            Submitted by: f8l
            Submitted on: Thu 03 May 2012 15:44:49 CEST
                Category: config file
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 0.3.7
                IRC nick: f8l

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Details:

Contents of ~/.weechat/weechat.conf and other config files are sometimes
disappear after a power outage or other crash.
This was probably caused by the fact that some filesystems are unable rename a
file atomically if the rename doesn't overwrite another file.

More information about overwrite-by-rename:
http://btrfs.ipv5.de/index.php?title=FAQ#What_are_the_crash_guarantees_of_overwrite-by-rename.3F

I attach a simple patch that may fix the problem.



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File Attachments:


-------------------------------------------------------
Date: Thu 03 May 2012 15:44:49 CEST  Name:
0001-Make-config_file_write_internal-perform-an-overwrite.patch  Size: 856B  
By: f8l

<http://savannah.nongnu.org/bugs/download.php?file_id=25772>

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