clrfl.c

该压缩文件为unix环境高级编程这本书所附带的源码,希望有人需要!

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

void
clr_fl(int fd, int flags)
				/* flags are the file status flags to turn off */
{
	int		val;

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

	val &= ~flags;		/* turn flags off */

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