fig17.31

unix环境高级编程第二版配套源代码 unix环境高级编程第二版配套源代码

#include	"opend.h"
#include	<fcntl.h>

void
request(char *buf, int nread, int fd)
{
	int		newfd;

	if (buf[nread-1] != 0) {
		sprintf(errmsg, "request not null terminated: %*.*s\n",
		  nread, nread, buf);
		send_err(fd, -1, errmsg);
		return;
	}
	if (buf_args(buf, cli_args) < 0) {	/* parse args & set options */
		send_err(fd, -1, errmsg);
		return;
	}
	if ((newfd = open(pathname, oflag)) < 0) {
		sprintf(errmsg, "can't open %s: %s\n", pathname,
		  strerror(errno));
		send_err(fd, -1, errmsg);
		return;
	}
	if (send_fd(fd, newfd) < 0)		/* send the descriptor */
		err_sys("send_fd error");
	close(newfd);		/* we're done with descriptor */
}