+XBT_PUBLIC(msg_error_t) MSG_file_seek(msg_file_t fd, sg_size_t offset, int origin);
+XBT_PUBLIC(sg_size_t) MSG_file_tell (msg_file_t fd);
+XBT_PUBLIC(void) __MSG_file_get_info(msg_file_t fd);
+/************************** Storage handling ***********************************/
+XBT_PUBLIC(msg_host_t) MSG_get_storage_by_name(const char *name);
+XBT_PUBLIC(const char *) MSG_storage_get_name(msg_storage_t storage);
+XBT_PUBLIC(sg_size_t) MSG_storage_get_free_size(const char* name);
+XBT_PUBLIC(sg_size_t) MSG_storage_get_used_size(const char* name);
+XBT_PUBLIC(msg_storage_t) MSG_storage_get_by_name(const char *name);
+XBT_PUBLIC(xbt_dict_t) MSG_storage_get_properties(msg_storage_t storage);
+XBT_PUBLIC(void) MSG_storage_set_property_value(msg_storage_t storage, const char *name, char *value,void_f_pvoid_t free_ctn);
+XBT_PUBLIC(xbt_dynar_t) MSG_storages_as_dynar(void);
+XBT_PUBLIC(msg_error_t) MSG_storage_set_data(msg_storage_t host, void *data);
+XBT_PUBLIC(void *) MSG_storage_get_data(msg_storage_t storage);
+XBT_PUBLIC(xbt_dict_t) MSG_storage_get_content(msg_storage_t storage);
+XBT_PUBLIC(sg_size_t) MSG_storage_get_size(msg_storage_t storage);
+XBT_PUBLIC(msg_error_t) MSG_storage_file_move(msg_file_t fd, msg_host_t dest, char* mount, char* fullname);
+XBT_PUBLIC(msg_error_t) MSG_storage_file_rename(msg_storage_t storage, const char* src, const char* dest);