When Eclipse OSGI starts up, it checks to see whether certain locations are writable. Based on what it finds, it chooses locations for the configuration area, the user base directory, etc. What is "interesting" is the way that it determines whether a location is writable. Here is an excerpt from AdaptorUtil.java:
File fileTest = null;
try {
// we use the .dll suffix to properly test on Vista virtual directories
// on Vista you are not allowed to write executable files on virtual directories like "Program Files"
fileTest = File.createTempFile("writtableArea", ".dll", installDir); //$NON-NLS-1$ //$NON-NLS-2$
} catch (IOException e) {
//If an exception occured while trying to create the file, it means that it is not writtable
return false;
} finally {
if (fileTest != null)
fileTest.delete();
}
return true;The code attempts to create a file named writtableArea.dll in the target directory. This sets off alarm bells on many virus scanners. This came to my attention because exactly one of users reported that our RCP application would simply disappear after presenting the splash screen. They were using Kapersky with particularly draconian settings.
