static int ds1225y_set_to_mode(ds1225y_t *NVRAM, nvram_open_mode mode, const char *filemode) { if (NVRAM->open_mode != mode) { if (NVRAM->file) qemu_fclose(NVRAM->file); NVRAM->file = qemu_fopen(NVRAM->filename, filemode); NVRAM->open_mode = mode; } return (NVRAM->file != NULL); }