From 58a981d2f69254546749ebe516ccb8e01897754c Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Mon, 24 Feb 2014 23:53:14 +0100
Subject: DatabaseSave: add constant OLDEST_DB_FORMAT

---
 src/db/DatabaseSave.cxx | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/db/DatabaseSave.cxx b/src/db/DatabaseSave.cxx
index e9c81442b..98731372e 100644
--- a/src/db/DatabaseSave.cxx
+++ b/src/db/DatabaseSave.cxx
@@ -43,6 +43,11 @@
 
 static constexpr unsigned DB_FORMAT = 1;
 
+/**
+ * The oldest database format understood by this MPD version.
+ */
+static constexpr unsigned OLDEST_DB_FORMAT = 1;
+
 void
 db_save_internal(FILE *fp, const Directory &music_root)
 {
@@ -128,7 +133,7 @@ db_load_internal(TextFile &file, Directory &music_root, Error &error)
 		}
 	}
 
-	if (format != DB_FORMAT) {
+	if (format < OLDEST_DB_FORMAT || format > DB_FORMAT) {
 		error.Set(db_domain,
 			  "Database format mismatch, "
 			  "discarding database file");
-- 
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