-smx_storage_t SIMIX_storage_create(const char *name, void *storage, void *data);
-void SIMIX_storage_destroy(void *s);
-smx_synchro_t SIMIX_file_read(smx_file_t fd, sg_size_t size, sg_host_t host);
-smx_synchro_t SIMIX_file_write(smx_file_t fd, sg_size_t size, sg_host_t host);
-smx_synchro_t SIMIX_file_open(const char* fullpath, sg_host_t host);
-smx_synchro_t SIMIX_file_close(smx_file_t fd, sg_host_t host);
-int SIMIX_file_unlink(smx_file_t fd, sg_host_t host);
-sg_size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd);
-sg_size_t SIMIX_file_tell(smx_process_t process, smx_file_t fd);
-xbt_dynar_t SIMIX_file_get_info(smx_process_t process, smx_file_t fd);
-int SIMIX_file_seek(smx_process_t process, smx_file_t fd, sg_offset_t offset, int origin);
-int SIMIX_file_move(smx_process_t process, smx_file_t fd, const char* fullpath);
-
-sg_size_t SIMIX_storage_get_free_size(smx_process_t process, smx_storage_t storage);
-sg_size_t SIMIX_storage_get_used_size(smx_process_t process, smx_storage_t storage);
-
-xbt_dict_t SIMIX_storage_get_properties(smx_storage_t storage);
-
-void SIMIX_post_io(smx_synchro_t synchro);
-void SIMIX_io_destroy(smx_synchro_t synchro);
-void SIMIX_io_finish(smx_synchro_t synchro);
+XBT_PRIVATE smx_storage_t SIMIX_storage_create(const char *name, void *storage, void *data);
+XBT_PRIVATE void SIMIX_storage_destroy(void *s);
+XBT_PRIVATE smx_activity_t SIMIX_file_read(smx_file_t fd, sg_size_t size, sg_host_t host);
+XBT_PRIVATE smx_activity_t SIMIX_file_write(smx_file_t fd, sg_size_t size, sg_host_t host);
+XBT_PRIVATE smx_activity_t SIMIX_file_open(const char* fullpath, sg_host_t host);
+XBT_PRIVATE smx_activity_t SIMIX_file_close(smx_file_t fd, sg_host_t host);
+XBT_PRIVATE int SIMIX_file_unlink(smx_file_t fd, sg_host_t host);
+XBT_PRIVATE sg_size_t SIMIX_file_get_size(smx_process_t process, smx_file_t fd);
+XBT_PRIVATE sg_size_t SIMIX_file_tell(smx_process_t process, smx_file_t fd);
+XBT_PRIVATE xbt_dynar_t SIMIX_file_get_info(smx_process_t process, smx_file_t fd);
+XBT_PRIVATE int SIMIX_file_seek(smx_process_t process, smx_file_t fd, sg_offset_t offset, int origin);
+XBT_PRIVATE int SIMIX_file_move(smx_process_t process, smx_file_t fd, const char* fullpath);
+
+XBT_PRIVATE sg_size_t SIMIX_storage_get_free_size(smx_process_t process, smx_storage_t storage);
+XBT_PRIVATE sg_size_t SIMIX_storage_get_used_size(smx_process_t process, smx_storage_t storage);
+
+XBT_PRIVATE xbt_dict_t SIMIX_storage_get_properties(smx_storage_t storage);
+
+XBT_PRIVATE void SIMIX_io_destroy(smx_activity_t synchro);
+XBT_PRIVATE void SIMIX_io_finish(smx_activity_t synchro);