Recently my /tmp dir has been filled with tmp uploaded files which are never cleaned up.
I am using debian 6, apache2-2.2.16 with mod_fcgid and php5, using Virtualmin.
A file is received with HTTP POST and stored in /tmp/fcgid.tmp.*, with perm 0600, owner www-data . This means that apache (running under user www-data) is receiving the file, after which the file is moved to ~[site-user]/tmp, and processed further with suexec/fcgid/php5 (under user [site-user]).
I suspect that the /tmp file the process fcgid process running under [site-user] tries to delete the upload, but fails because /tmp has a sticky bit and may not delete it. Maybe the action fails because /tmp and ~[site-user]/tmp are on different partitions so it needs to copy/delete instead of renaming?
My question: Which process (httpd/fcgid/suexec/php5) is responsible for deleting the tmp file, and how might I fix this problem?
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Kind regards,
Fester Zigterman Rustenburg
Software developer, Info-kanaal
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