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[James Page <737603@xxxxxxxxxxxxxxxxxx>]

Steve

So I tried out the patch (took some time to build ppa:james-page/junk)
and did some more digging when it did not appear to work.

I managed to capture a stacktrace when the issue occured:

java.lang.UnsatisfiedLinkError: Unable to load library 'pam': libpam.so: cannot open shared object file: No such file or directory
	at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:164)
	at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:237)
	at com.sun.jna.Library$Handler.(Library.java:140)
	at com.sun.jna.Native.loadLibrary(Native.java:374)
	at com.sun.jna.Native.loadLibrary(Native.java:359)
	at org.jvnet.libpam.impl.PAMLibrary.(PAMLibrary.java:132)
	at sun.misc.Unsafe.ensureClassInitialized(Native Method)
	at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:43)
	at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:140)
	at java.lang.reflect.Field.acquireFieldAccessor(Field.java:936)
	at java.lang.reflect.Field.getFieldAccessor(Field.java:917)
	at java.lang.reflect.Field.get(Field.java:376)
	at com.sun.jna.Native.loadLibraryInstance(Native.java:398)
	at com.sun.jna.Native.getStructureAlignment(Native.java:507)
	at com.sun.jna.Structure.setAlignType(Structure.java:191)
	at com.sun.jna.Structure.(Structure.java:149)
	at com.sun.jna.Structure.(Structure.java:145)
	at com.sun.jna.Structure.(Structure.java:141)
	at com.sun.jna.Structure.(Structure.java:132)

So it looks like the issue (or maybe one of them) is actually in libjna-
java; I'm pretty sure that openjdk may exhibit the same symptoms but the
issue reading libpam.so is generated outside of openjdk.

I'll look into the specific library to see what its doing - suspect it
something horrible with guessed paths but it may be related to the
java.library.path variable.

-- 
You received this bug notification because you are a member of OpenJDK,
which is subscribed to openjdk-6 in ubuntu.
https://bugs.launchpad.net/bugs/737603

Title:
  JNI unable to find libpam.so

Status in “openjdk-6” package in Ubuntu:
  Triaged

Bug description:
  I'm currently packaging Jenkins for Ubuntu; this application has
  native authentication integration through the use of PAM. This was
  working fine i.e. the java native interface dispatcher was able to
  find libpam.so in /lib and all was happy.

  I've just updated my test system and native authentication no longer
  works; the JNI dispatcher can't find the library.  I have done a bit
  of digging and it looks like libpam.so.* is installed to /lib/i386
  -linux-gnu instead of /lib (as on Maverick and possibly earlier Natty
  releases?).  This directory is not on the java.library.path by default
  which I suspect may be the issue (see below for default java library
  path):

  /usr/lib/jvm/java-6-openjdk/jre/lib/i386/client:/usr/lib/jvm/java-6-openjdk/jre/lib/i386:/usr/lib/jvm/java-6-openjdk/jre/../lib/i386:/usr/java/packages/lib/i386:/usr/lib/jni:/lib:/usr/lib

  So I'm not sure whether this is a bug in pam or openjdk but I guess it
  could be either.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: libpam0g 1.1.2-2ubuntu4
  ProcVersionSignature: Ubuntu 2.6.38-7.35-generic-pae 2.6.38
  Uname: Linux 2.6.38-7-generic-pae i686
  Architecture: i386
  Date: Fri Mar 18 14:54:45 2011
  InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Alpha i386 (20110301.4)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: pam
  UpgradeStatus: No upgrade log present (probably fresh install)