和守护进程通信

读FIFO
void readfifo()
{
    int len = 0;
    char buf[1024];
    memset(buf, 0, sizeof(buf));
    int fd = open("/home/test/1/fifo1", O_RDONLY);
    while ((len = read(fd, buf, sizeof(buf))) > 0)
    {
        printf("%s\n", buf);
    }
    close(fd);
    return;
}

写FIFO
void writefifo()
{
    int len = 0;
    char buf[1024];
    memset(buf, 0, sizeof(buf));
    int fd = open("/home/test/1/fifo1", O_WRONLY);
    scanf("%s", buf);
    write(fd, buf, sizeof(buf));
    close(fd);
    return;
}