#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <limits.h>

int main(void){
    int fd;
    int len;
    char buf[PIPE_BUF];
    mode_t mode = 0666;

    if((mkfifo("fifo1",mode))<0){
        perror("mkfifo");
        exit(EXIT_FAILURE);
    }
    if((fd=open("fifo1",O_RDONLY))<0){
        perror("open");
        exit(EXIT_FAILURE);
    }
    while((len = read(fd,buf,PIPE_BUF -1)) > 0)
    printf("rdfifo read: %s",buf);
    close(fd);
    exit(EXIT_SUCCESS);
}