fig3.11

来自「unix环境编程」· 11 代码 · 共 17 行

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

void
set_fl(int fd, int flags) /* flags are file status flags to turn on */
{
	int		val;

	if ((val = fcntl(fd, F_GETFL, 0)) < 0)
		err_sys("fcntl F_GETFL error");

	val |= flags;		/* turn on flags */

	if (fcntl(fd, F_SETFL, val) < 0)
		err_sys("fcntl F_SETFL error");
}