#include <sys/types.h>
#include <fcntl.h>
#include "ndelay.h"

/**
  * @file ndelay.c
  * @author djb
  * @ref qmail	
  * @brief delaying of IO operations
  */

#ifndef O_NONBLOCK
#define O_NONBLOCK O_NDELAY
#endif

int ndelay_on(int fd)
{
  return fcntl(fd,F_SETFL,fcntl(fd,F_GETFL,0) | O_NONBLOCK);
}

int ndelay_off(int fd)
{
  return fcntl(fd,F_SETFL,fcntl(fd,F_GETFL,0) & ~O_NONBLOCK);
}