TmpIO doesn't respect PassengerDataBufferDir

[jcoyne]

Issue report

Fill in as much as possible so that we can understand, find and fix the problem.

Are you sure this is a bug in Passenger? Yes Please try with the newest version of Passenger to avoid issues that have already been fixed

Question 1: What is the problem?

• What is the expected behavior? Temporary upload files are written to PassengerDataBufferDir
• What is the actual behavior? Temporary files are written to $TMPDIR
• How can we reproduce it? Please try to provide a sample application (or Virtual Machine) demonstrating the issue. Otherwise, if we can't reproduce it, we might have to ask you a number of followup questions or run certain commands to try and figure out the problem. We have this config:

  <IfModule mod_passenger.c>
  PassengerDataBufferDir "/opt/app/lyberadmin/purl-fetcher/shared/tmp"
  PassengerDefaultRuby "/usr/local/rvm/rubies/ruby-3.3.3/bin/ruby"
  PassengerInstanceRegistryDir "/var/run/passenger-instreg"
  PassengerMaxPoolSize 30
  PassengerRoot "/usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini"
  PassengerRuby "/usr/local/rvm/rubies/ruby-3.3.3/bin/ruby"
  PassengerShowVersionInHeader Off
  </IfModule>

When we try to upload a file that is larger than /tmp we see this error in the log:

App 1019421 output: [7dfd293d-9322-451f-804c-90eba118759d] Errno::ENOSPC (No space left on device @ io_write - /tmp/PassengerTeeInput-1tfvyic):

Your answer:

Question 2: Passenger version and integration mode:

• open source 6.0.22/apache

Your answer:

Question 3: OS or Linux distro, platform (including version):

Your answer: Ubuntu 20.04.4 LTS

Question 4: Passenger installation method:

Your answer: [ ] RubyGems + Gemfile [ ] RubyGems, no Gemfile [x] Phusion APT repo [ ] Phusion YUM repo [ ] OS X Homebrew [ ] source tarball [ ] Other, please specify:

Question 5: Your app's programming language (including any version managers) and framework (including versions): Your answer: Ruby 3.3.3, RVM, Rails 7.1.3.4

Question 6: Are you using a PaaS and/or containerization? If so which one?

• For example: Heroku, Amazon Container Services, Docker 1.9 with an image based on passenger-docker

Your answer: no

Question 7: Anything else about your setup that we should know?

Your answer: none