#include	"opend.h"char	 errmsg[MAXLINE];int		 oflag;char	*pathname;intmain(void){	int		nread;	char	buf[MAXLINE];	for ( ; ; ) {	/* read arg buffer from client, process request */		if ((nread = read(STDIN_FILENO, buf, MAXLINE)) < 0)			err_sys("read error on stream pipe");		else if (nread == 0)			break;		/* client has closed the stream pipe */		request(buf, nread, STDOUT_FILENO);	}	exit(0);}