_real_open         25 native_client_sdk/src/libraries/nacl_io/kernel_wrap_real.h int _real_open(const char* pathname, int oflag, mode_t cmode, int* newfd);
_real_open        141 native_client_sdk/src/libraries/nacl_io/passthroughfs/passthrough_fs.cc   int error = _real_open(path.Join().c_str(), mode, 0666, &real_fd);