in src/main/java/org/apache/sling/commons/log/logback/internal/LogConfigManager.java [1530:1543]
String getRootDir() {
if (rootDir == null) {
String slingLogRoot = bundleContext.getProperty(LogConstants.SLING_LOG_ROOT);
if (slingLogRoot == null) {
slingLogRoot = bundleContext.getProperty(LogConstants.SLING_HOME);
if (slingLogRoot == null) {
slingLogRoot = Paths.get("").toAbsolutePath().toString();
}
}
addInfo("Using rootDir as " + slingLogRoot);
rootDir = new File(slingLogRoot);
}
return rootDir.toString();
}