Fixing a bug in FileLayered keySet oid

Author: PicoCreator

src/main/java/picoded/dstack/file/layered/FileLayered_FileWorkspaceMap.java

@@ -82,7 +82,7 @@ public Set<String> keySet() {
 			}
 
 			// List all the files/folders
-			File[] l2_dirList = baseDir.listFiles();
+			File[] l2_dirList = l1_dir.listFiles();
 
 			for(File l2_dir : l2_dirList) {
 				// Skip if its not a directory

src/main/java/picoded/dstack/file/simple/FileSimple_FileWorkspaceMap.java

@@ -73,7 +73,7 @@ protected boolean validateOid(String oid) {
 		}
 
 		// Adding safety check for file operation, ensuring oid is alphanumeric
-		if (!oid.matches("[a-zA-Z0-9]+")) {
+		if (!oid.matches("[a-zA-Z0-9][a-zA-Z0-9][a-zA-Z0-9][a-zA-Z0-9][a-zA-Z0-9][a-zA-Z0-9]+")) {
 			return false;
 		}