Made some small adjustments

src/container.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "utils.h"
+
+#define CONTAINER_IDENTIFIER_MAX_LENGTH 64
+
+result_t check_container_identifier(const char* container);
+result_t check_container_exists(const char* container);
+
+result_t get_container_pool_path(char** _path);
+result_t get_container_path(char** _path, const char* container);
+
+result_t add_root_container(const char* container, uint64_t size);
+result_t add_backed_container(const char* container, const char* backing);
+result_t remove_container(const char* container);
+
+result_t trim_container(const char* container);
+result_t reset_container(const char* container);
+
+bool container_filter(const char* file);
+result_t list_containers(char*** _containers);