1 files changed, 42 insertions, 0 deletions
diff --git a/src/lib-master/master-instance.h b/src/lib-master/master-instance.h
new file mode 100644
index 0000000..2b25978
--- /dev/null
+++ b/src/lib-master/master-instance.h
@@ -0,0 +1,42 @@
+#ifndef MASTER_INSTANCE_H
+#define MASTER_INSTANCE_H
+
+#define MASTER_INSTANCE_FNAME "instances"
+
+struct master_instance_list;
+
+struct master_instance {
+	time_t last_used;
+	const char *name;
+	const char *base_dir;
+	const char *config_path;
+};
+
+struct master_instance_list *master_instance_list_init(const char *path);
+void master_instance_list_deinit(struct master_instance_list **list);
+
+/* Add/update last_used timestamp for an instance. Returns 0 if ok,
+   -1 if I/O error. */
+int master_instance_list_update(struct master_instance_list *list,
+				const char *base_dir);
+/* Set instance's name. Returns 1 if ok, 0 if name was already used for
+   another instance (base_dir) or -1 if I/O error. */
+int master_instance_list_set_name(struct master_instance_list *list,
+				  const char *base_dir, const char *name);
+/* Remove instance. Returns 1 if ok, 0 if it didn't exist or -1 if I/O error. */
+int master_instance_list_remove(struct master_instance_list *list,
+				const char *base_dir);
+
+/* Find instance by its name. */
+const struct master_instance *
+master_instance_list_find_by_name(struct master_instance_list *list,
+				  const char *name);
+
+/* Iterate through existing instances. */
+struct master_instance_list_iter *
+master_instance_list_iterate_init(struct master_instance_list *list);
+const struct master_instance *
+master_instance_iterate_list_next(struct master_instance_list_iter *iter);
+void master_instance_iterate_list_deinit(struct master_instance_list_iter **iter);
+
+#endif