request.c

来自「apue一书的源码。unix高级环境编程一书的源码 经典」· C语言 代码 · 共 39 行

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

void
request(char *buf, int nread, int clifd, uid_t uid)
{
	int		newfd;

	if (buf[nread-1] != 0) {
		sprintf(errmsg,
		  "request from uid %d not null terminated: %*.*s\n",
		  uid, nread, nread, buf);
		send_err(clifd, -1, errmsg);
		return;
	}
	log_msg("request: %s, from uid %d", buf, uid);

	/* parse the arguments, set options */
	if (buf_args(buf, cli_args) < 0) {
		send_err(clifd, -1, errmsg);
		log_msg(errmsg);
		return;
	}

	if ((newfd = open(pathname, oflag)) < 0) {
		sprintf(errmsg, "can't open %s: %s\n",
		  pathname, strerror(errno));
		send_err(clifd, -1, errmsg);
		log_msg(errmsg);
		return;
	}

	/* send the descriptor */
	if (send_fd(clifd, newfd) < 0)
		log_sys("send_fd error");
	log_msg("sent fd %d over fd %d for %s", newfd, clifd, pathname);
	close(newfd);		/* we're done with descriptor */
}