Last modified: 2013-06-18 13:27:19 UTC

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Bug 12433 - better $wgReadOnlyFile lock file naming
better $wgReadOnlyFile lock file naming
Product: MediaWiki
Classification: Unclassified
Documentation (Other open bugs)
All All
: Lowest trivial (vote)
: ---
Assigned To: Nobody - You can work on this!
Depends on:
  Show dependency treegraph
Reported: 2007-12-28 00:21 UTC by Dan Jacobson
Modified: 2013-06-18 13:27 UTC (History)
4 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Description Dan Jacobson 2007-12-28 00:21:54 UTC
In DefaultSettings.php, please add this to the comments:
    * If this lock file exists, the wiki will be forced into read-only mode.

                              ^and has a size greater than zero!!!

    * Its contents will be shown to users as part of the read-only warning
    * message.
   $wgReadOnlyFile         = false; /// defaults to "{$wgUploadDirectory}/lock_yBgMBwiR";

(Also note using the filesystem this way precludes multiple wikis using
a read-only filesystem, etc...)

Also kindly add comments at
   $wgReadOnly             = null;

  To lock the database, one can also use e.g.,
  $wgReadOnly="Cleaning up a mess; try again real soon." Don't just
  use just use $wgReadOnly==true, which will lock it but look bad:
  "1". Nor should "" be used, as that will... */

Also comment the neighboring
$wgDebugComments        = false;
$wgLogQueries           = false;
and other variables you forgot to comment in DefaultSettings.php, please.

By the way, shouldn't files like these give an error when executed from the
command line?
$ php SpecialLockdb.php; echo $?
$ php Title.php ;echo $?
Should I open a separate bug? Thanks.
Comment 1 Dan Jacobson 2007-12-28 00:24:38 UTC
s/==/=/ above. Also test what happens with ""...
Comment 2 Aaron Schulz 2008-12-29 18:54:45 UTC
Please make a patch file
Comment 3 Dan Jacobson 2008-12-29 19:25:26 UTC
I am only 1/4 sure of what to say, so I pass this on to others.
Comment 4 Aaron Schulz 2009-01-02 11:24:53 UTC
Added size blurb in 45313. Other stuff seems fine as of 1.14.
Comment 5 Brion Vibber 2009-01-06 22:07:59 UTC
Existence of the lock file really ought to trigger read-only mode, even if it's empty...
Comment 6 Chad H. 2009-03-12 16:17:01 UTC
(In reply to comment #5)
> Existence of the lock file really ought to trigger read-only mode, even if it's
> empty...

This doesn't seem to be the case. We're checking the boolean return from file_get_contents(). If the file is empty (''), then we'd be returning false.
Comment 7 Dan Jacobson 2009-05-20 14:02:34 UTC
Well you had better change it soon if you are going to change it at
all, as the indeed very bad way has set up camp as a documented
standard, "growing more established by each day that passes."

Or else click the Close Bug button and surrender to a life of ugliness.
Comment 8 Dan Jacobson 2009-05-26 12:50:32 UTC
One [low priority] day if somebody wants to work on this:
it seems instead of saying in Setup.php:
>if( $wgReadOnlyFile === false ) $wgReadOnlyFile = "{$wgUploadDirectory}/lock_yBgMBwiR";
and in DefaultSettings.php:
> * If this lock file exists (size > 0), the wiki will be forced into read-only mode.
> * Its contents will be shown to users as part of the read-only warning
> * message.
> */
>$wgReadOnlyFile         = false; ///< defaults to "{$wgUploadDirectory}/lock_yBgMBwiR";
it would be better to say just once in DefaultSettings.php:
>$wgReadOnlyFile = $wgUploadDirectory . '/' . wfWikiID() . 'lock_wiki';
and also say there (and implement) that an empty file will also lock the wiki.
*lock_wiki is easier to remember than lock_yBgMBwiR.
*using wfWikiID() means we are now safe, no longer
stepping on each other's toes. It's the same idea as used in
Comment 9 Alexandre Emsenhuber [IAlex] 2009-08-24 15:40:49 UTC
You can't call wfWikiID() from DefaultSettings.php since this function is in GlobalFunctions.php and that file is not loaded when DefaultSettings.php is executed.
Comment 10 Chad H. 2011-11-11 00:50:20 UTC
Not really sure what else to do here...

$wgReadOnly and $wgReadOnlyFile have comments about their contents being used as the message, and $wgReadOnlyFile has a comment about it needing to be > 0 for it to work. $wgDebugComments has comments now and $wgLogQueries.

I'm not going to leave this open for "other variables [we] forgot to comment in DefaultSettings.php," and the comment about executing files from the command line has nothing to do with this.

Closing FIXED.

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