-smx_action_t SIMIX_file_read(smx_process_t process, const char* storage, void* ptr, size_t size, size_t nmemb, smx_file_t stream);
-smx_action_t SIMIX_file_write(smx_process_t process, const char* storage, const void* ptr, size_t size, size_t nmemb, smx_file_t stream);
-smx_action_t SIMIX_file_open(smx_process_t process, const char* storage, const char* path, const char* mode);
-smx_action_t SIMIX_file_close(smx_process_t process, const char* storage, smx_file_t fp);
-smx_action_t SIMIX_file_stat(smx_process_t process, const char* storage, int fd, void* buf);
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-void SIMIX_post_io(smx_action_t action);
-void SIMIX_io_destroy(smx_action_t action);
-void SIMIX_io_finish(smx_action_t action);
+XBT_PRIVATE void SIMIX_io_destroy(smx_activity_t synchro);
+XBT_PRIVATE void SIMIX_io_finish(smx_activity_t synchro);