Added DB_TREENAME_LEN define to avoid hardcoded length for database string

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/libalpm/db.c b/lib/libalpm/db.c
index 3b962d96..760a2fde 100644
--- a/lib/libalpm/db.c
+++ b/lib/libalpm/db.c
@@ -53,7 +53,7 @@ pmdb_t *db_open(char *root, char *dbpath, char *treename)
 		return(NULL);
 	}
 
-	strncpy(db->treename, treename, sizeof(db->treename)-1);
+	strncpy(db->treename, treename, DB_TREENAME_LEN-1);
 
 	db->pkgcache = NULL;
 	db->grpcache = NULL;