rem: static void readfd (int fd, char *buffer, int N)
add: static void readfd (int fd, char *buffer, size_t N)
context: static void readfd (int fd, char *buffer, int N){	int  ret;	int total=0;  		while (total < N) {		io_flush();		ret = read_unbuffered (fd, buffer + total, N-total);		total += ret;	}	stats.total_read += total;}