Implement database schema versioning.

As the database schema evolves, it might be useful to have an identifier
for the particular version in use.  This commit adds that feature.

1 files changed, 3 insertions, 1 deletions

diff --git a/ovsdb/ovsdb.h b/ovsdb/ovsdb.h
index a83412dcd..642f686f0 100644
--- a/ovsdb/ovsdb.h
+++ b/ovsdb/ovsdb.h
@@ -29,10 +29,12 @@ struct uuid;
 /* Database schema. */
 struct ovsdb_schema {
     char *name;
+    char *version;
     struct shash tables;        /* Contains "struct ovsdb_table_schema *"s. */
 };
 
-struct ovsdb_schema *ovsdb_schema_create(const char *name);
+struct ovsdb_schema *ovsdb_schema_create(const char *name,
+                                         const char *version);
 struct ovsdb_schema *ovsdb_schema_clone(const struct ovsdb_schema *);
 void ovsdb_schema_destroy(struct ovsdb_schema *);