SID-00484: Upload attachments no longer work

Status:	Answered	TWiki version:	4.2.0	Perl version:	5.8.5
Category:	CategoryAttachments	Server OS:	Centos 4, kernel 2.6.9	Last update:	16 years ago

I have had a happily functioning TWiki for over a year now and all of the sudden uploading of attachments has stopped working. I've got plenty of disk and I get no error at upload time. All the metadata is stored properly but I get a 0 byte file in the /pub/Main/Foo/Attachment directory with a proper RCS file. I do get an error in the apache error log but I haven't been able to understand what the problem is:

[Fri Aug 14 22:38:21 2009] [error] [client 10.157.24.62] binmode() on closed filehandle fh00001mysql.txt at, referer: http://uspsvm60.eng.dnb.com/twiki/bin/attach/Sandbox/JasonTestUpload
[Fri Aug 14 22:38:21 2009] [error] [client 10.157.24.62] \t/var/www/twiki/lib/TWiki/Store.pm line 979 (#1), referer: http://uspsvm60.eng.dnb.com/twiki/bin/attach/Sandbox/JasonTestUpload
[Fri Aug 14 22:38:21 2009] [error] [client 10.157.24.62]     (W unopened) You tried binmode() on a filehandle that was never opened., referer: http://uspsvm60.eng.dnb.com/twiki/bin/attach/Sandbox/JasonTestUpload
[Fri Aug 14 22:38:21 2009] [error] [client 10.157.24.62]     Check you control flow and number of arguments., referer: http://uspsvm60.eng.dnb.com/twiki/bin/attach/Sandbox/JasonTestUpload
[Fri Aug 14 22:38:21 2009] [error] [client 10.157.24.62]     , referer: http://uspsvm60.eng.dnb.com/twiki/bin/attach/Sandbox/JasonTestUpload
[Fri Aug 14 22:38:22 2009] [error] [client 10.157.24.62] read() on closed filehandle fh00001mysql.txt at, referer: http://uspsvm60.eng.dnb.com/twiki/bin/attach/Sandbox/JasonTestUpload
[Fri Aug 14 22:38:22 2009] [error] [client 10.157.24.62] \t/var/www/twiki/lib/TWiki/Store/RcsFile.pm line 730 (#2), referer: http://uspsvm60.eng.dnb.com/twiki/bin/attach/Sandbox/JasonTestUpload
[Fri Aug 14 22:38:22 2009] [error] [client 10.157.24.62]     (W closed) You tried to read from a closed filehandle., referer: http://uspsvm60.eng.dnb.com/twiki/bin/attach/Sandbox/JasonTestUpload
[Fri Aug 14 22:38:22 2009] [error] [client 10.157.24.62]     , referer: http://uspsvm60.eng.dnb.com/twiki/bin/attach/Sandbox/JasonTestUpload

any ideas? all dirs are chowned by apache:apache and seem the have adequate permissions... I'm at a loss. I did install the BatchUploadPlugin a month or so ago but I'm assuming that wouldn't impact basic file attachment functionality....

-- JasonLeeTaylor - 2009-08-15

Discussion and Answer

Known issue of TWiki 4.2 if you install a plugin that uses the beforeAttachmentSaveHandler callback. See AttachmentsInPubAreZeroSize, KnownIssuesOfTWiki04x02.

-- PeterThoeny - 2009-08-15

Peter, Thanks for the prompt response! I followed the trail above and applied the patched Store.pm and it works like a charm. Thanks a million! I was searching for a binmode specific reference and that didn't seem to bear any fruit.

I also wanted to let you know that I think the TWiki is an awesome tool. I've been building on this initial implementation for over a year now and find it an extremely useful tool across many different dimensions. Thanks again! -Jason

-- JasonLeeTaylor - 2009-08-16

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