ArtifactManager introduces regression with publishing symbolic links.

I have observed a regression issue with the introduction of the new ArtifactManager (https://github.com/jenkinsci/jenkins/commit/e1eea67bb2fa1a356492e91313d84a523f441b34 - https://issues.jenkins-ci.org/browse/JENKINS-17236 ).

I have pinpointed the issue and saw it was introduced in jenkins 1.532 (as in it works perfectly in 1.531, but fails in 1.532 and above, including the 1.532.2 LTS version).

My particular use case is that the result of our build creates a symlink which points to the final artifact (the final artifact as stored on disk has a timestamp/build number in its name). However with the introduction of the new ArtifactManager the artifacts which are identified using symlinks no longer get published.

Steps to reproduce:

• Create a new job
• Add a shell build step

  rm -rf folder
  mkdir folder 
  echo "bla" > folder/artifact
  ln -sf ./artifact folder/link
  

• Add a 'Archive the Artifacts' post-build action and in the Files to archive text box enter

  folder/link
  

Expected behavior (as implemented/verified) on jenkins 1.524 - 1.531:

• The build succeeds
• The 'Last Successful Artifacts' mentions:

  link 4B
  

Actual behavior (as implemented/verified) on jenkins 1.532 - 1.552, including LTS:

• The build succeeds
• The 'Last Successful Artifacts' mentions nothing.

(for reference the build output:

Started by user anonymous
Building on master in workspace /home/jenkins/jenkins/jobs/brossel_edb/workspace
[workspace] $ /bin/sh -xe /tmp/hudson1352860404870483249.sh
+ rm -rf folder
+ mkdir folder
+ echo bla
+ ln -sf ./artifact folder/link
Archiving artifacts
Finished: SUCCESS

)

An additional sidenote is that the ArtifactDeployer plugin (version 0.28) is doing its job properly, another indication that the way symlinks are resolved/dealt with has likely changed due the introduction of the new ArtifactManager.