测试代码:mkfifo

int main(int argc,char *argv[])
{
	int mk = mkfifo("1.p",0640);
	if( mk < 0){
		perror("mkfifo");
		//return -1;
	}
	int fd = open("1.p",O_RDWR);
	if(fd < 0){
		perror("openfd");
	}
#if 0
	pid_t pid;

	if((pid = fork())<0)
	{
		perror("fork");
		return -1;
	}

	if(pid == 0){
		while(1)
		{
		char buf[32];
		memset(buf,0,32);
		int fd = read(fd,buf,sizeof(buf));
		printf("fd:%d\n",fd);
		if(fd > 0)
		puts(buf);
		}
	}else if(pid > 0){
#endif
		while(1)
		{
		char buf[32];
		memset(buf , 0, 32);
		gets(buf);
		printf(":%d\n",write(fd,buf,strlen(buf)));
		}
	//}
	return 0;
}