diff --git a/inc/Service/Media/MediaHandler.php b/inc/Service/Media/MediaHandler.php
index f668e35e..cf61ffce 100644
--- a/inc/Service/Media/MediaHandler.php
+++ b/inc/Service/Media/MediaHandler.php
@@ -5,9 +5,27 @@ use Vichan\Data\ThumbGenerationResult;
 
 
 interface MediaHandler {
+	/**
+	 * PHP file upload,
+	 */
+	public const FILE_KIND_UPLOADED = 0;
+	/**
+	 * Temporary file that should be moved/copied elsewhere.
+	 */
+	public const FILE_KIND_TEMPORARY = 1;
+	/**
+	 * Static vichan file.
+	 */
+	public const FILE_KIND_STATIC = 2;
+	/**
+	 * Live file in use by vichan in some post.
+	 */
+	public const FILE_KIND_INSTALLED = 3;
+
+
 	public function supportsMime(string $mime): bool;
 
-	public function openHandle(string $file_path, string $file_mime): mixed;
+	public function openHandle(string $file_path, string $file_mime, int $file_kind): mixed;
 
 	/**
 	 * Generates a thumbnail from the given file.