-XBT_PUBLIC(double) simcall_file_read(void* ptr, size_t size, size_t nmemb, smx_file_t stream);
-XBT_PUBLIC(size_t) simcall_file_write(const void* ptr, size_t size, size_t nmemb, smx_file_t stream);
-XBT_PUBLIC(smx_file_t) simcall_file_open(const char* storage, const char* path, const char* mode);
-XBT_PUBLIC(int) simcall_file_close(smx_file_t fp);
-XBT_PUBLIC(int) simcall_file_stat(smx_file_t fd, s_file_stat_t *buf);
+/***************************** File **********************************/
+XBT_PUBLIC(void *) simcall_file_get_data(smx_file_t fd);
+XBT_PUBLIC(void) simcall_file_set_data(smx_file_t fd, void *data);
+XBT_PUBLIC(size_t) simcall_file_read(size_t size, smx_file_t fd);
+XBT_PUBLIC(size_t) simcall_file_write(size_t size, smx_file_t fd);
+XBT_PUBLIC(smx_file_t) simcall_file_open(const char* storage, const char* path);
+XBT_PUBLIC(int) simcall_file_close(smx_file_t fd);