I know that in standalone mode it's possible to set the following system properties:
- org.jboss.boot.log.file
- jboss.server.log.dir
- jboss.server.temp.dir
- jboss.server.data.dir
- jboss.server.config.dir
We make use of this in our embedded solution. Can you see if these or similar are added to the "env" parameter of the addProcess call above?