[FIXED JENKINS-17137] Bogus permalinks created when using external builds directory.

changelog.html

@@ -64,6 +64,9 @@ Upcoming changes</a>
   <li class=bug>
     Preview function for textareas using Jenkins markup did not work when CSRF protection was enabled.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-17085">issue 17085</a>)
+  <li class=bug>
+    Permalinks created in the wrong place when using external build directories.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-17137">issue 17137</a>)
   <li class=bug>
     JNA-related error from Windows slave monitoring thrown repeatedly.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-15796">issue 15796</a>)

core/src/main/java/hudson/model/AbstractBuild.java

@@ -494,11 +494,17 @@ public abstract class AbstractBuild<P extends AbstractProject<P,R>,R extends Abs
         if (newTarget != null)
             newTarget.createSymlink(new LogTaskListener(LOGGER, Level.WARNING), name);
         else
-            new File(getProject().getBuildDir(), "../"+name).delete();
+            new File(getProject().getRootDir(), name).delete();
     }
 
     private void createSymlink(TaskListener listener, String name) throws InterruptedException {
-        Util.createSymlink(getProject().getBuildDir(),"builds/"+getId(),"../"+name,listener);
+        String target;
+        if (getProject().getBuildDir().equals(new File(getProject().getRootDir(), "builds"))) {
+            target = "builds/" + getId();
+        } else {
+            target = getRootDir().getAbsolutePath();
+        }
+        Util.createSymlink(getProject().getRootDir(), target, name, listener);
     }
 
     /**

test/src/test/java/hudson/model/AbstractProjectTest.java

@@ -58,6 +58,7 @@ import java.util.concurrent.Future;
 import org.apache.commons.io.FileUtils;
 import java.lang.ref.WeakReference;
 import java.net.HttpURLConnection;
+import org.jvnet.hudson.test.MockFolder;
 
 /**
  * @author Kohsuke Kawaguchi
@@ -329,4 +330,28 @@ public class AbstractProjectTest extends HudsonTestCase {
 
         assertEquals(1, u.getPublishersList().size());
     }
+
+    @Bug(17137)
+    public void testExternalBuildDirectorySymlinks() throws Exception {
+        // XXX when using JUnit 4 add: Assume.assumeFalse(Functions.isWindows()); // symlinks may not be available
+        HtmlForm form = new WebClient().goTo("configure").getFormByName("config");
+        File builds = createTmpDir();
+        form.getInputByName("_.rawBuildsDir").setValueAttribute(builds + "/${ITEM_FULL_NAME}");
+        submit(form);
+        assertEquals(builds + "/${ITEM_FULL_NAME}", jenkins.getRawBuildsDir());
+        FreeStyleProject p = jenkins.createProject(MockFolder.class, "d").createProject(FreeStyleProject.class, "p");
+        FreeStyleBuild b1 = p.scheduleBuild2(0).get();
+        File link = new File(p.getRootDir(), "lastStable");
+        assertTrue(link.exists());
+        assertEquals(b1.getRootDir().getAbsolutePath(), Util.resolveSymlink(link));
+        FreeStyleBuild b2 = p.scheduleBuild2(0).get();
+        assertTrue(link.exists());
+        assertEquals(b2.getRootDir().getAbsolutePath(), Util.resolveSymlink(link));
+        b2.delete();
+        assertTrue(link.exists());
+        assertEquals(b1.getRootDir().getAbsolutePath(), Util.resolveSymlink(link));
+        b1.delete();
+        assertFalse(link.exists());
+    }
+
 }