XBT_PUBLIC(sg_size_t) simcall_file_get_size(smx_file_t fd);
XBT_PUBLIC(xbt_dynar_t) simcall_file_get_info(smx_file_t fd);
XBT_PUBLIC(sg_size_t) simcall_file_tell(smx_file_t fd);
-XBT_PUBLIC(int) simcall_file_seek(smx_file_t fd, sg_size_t offset, int origin);
+XBT_PUBLIC(int) simcall_file_seek(smx_file_t fd, sg_offset_t offset, int origin);
XBT_PUBLIC(int) simcall_file_move(smx_file_t fd, const char* fullpath);
/***************************** Storage **********************************/
XBT_PUBLIC(sg_size_t) simcall_storage_get_free_size (smx_storage_t storage);