sockaddr_un实例--监听与连接UNIX域socket

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/* 要点：sockaddr_un * 功能：监听UNIX域socket  * 成功：返回新生成的套接字文件描述符  * 失败：返回-1  */int std_listen_unix(const char *socketfile){    int fd = 0, len = 0, operate_ret = OPERATE_SUCCESS;    struct sockaddr_un serv;    if((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)    {        STD_DEBUG_PRINT("socket failed! %s\n", strerror(errno));operate_ret = OPERATE_FAILED;        goto ret_lable;    }    unlink(socketfile);/***********************/    len = strlen(socketfile);    if(len > 107)    {        DEBUG_PRINT ("socket file len is too long!");operate_ret = OPERATE_FAILED;        goto ret_lable;    }    memset (&serv, 0, sizeof(serv));    serv.sun_family = AF_UNIX;    strncpy (serv.sun_path, socketfile, len);    len += offsetof(struct sockaddr_un, sun_path); /**********/    if(bind(fd, (struct sockaddr *)&serv, len) < 0)    {        DEBUG_PRINT ("bind failed!");        operate_ret = OPERATE_FAILED;        goto ret_lable;    }    if(listen(fd, 10) < 0)    {        DEBUG_PRINT ("listen failed!");        operate_ret = OPERATE_FAILED;        goto ret_lable;    }    return (fd);/************************/ret_lable:if (fd >= 0){close(fd);}    return operate_ret;}

/* 要点：sockaddr_un * 功能：连接到UNIX域socket  * 成功：返回新生成的套接字文件描述符  * 失败：返回-1  */int std_connect_unix(const s8 *socketfile){    int sock = 0, ret = 0, opt = 0;    size_t len = 0;    struct sockaddr_un srv_sock;    if( (sock = socket(AF_UNIX, SOCK_STREAM, 0)) < 0 )    {        DEBUG_PRINT("socket failed！%s\n", strerror(errno));        return OPERATE_FAILED;    }        len = strlen (socketfile);    memset (&srv_sock, 0, sizeof(struct sockaddr_un));    srv_sock.sun_family = AF_UNIX;    strncpy (srv_sock.sun_path, socketfile, len);        len += offsetof (struct sockaddr_un, sun_path);        if((ret = connect(sock, (struct sockaddr *)&srv_sock, len)) < 0 )    {        DEBUG_PRINT ("connect failed: %d\n", ret);        close (sock);        return OPERATE_FAILED;    }        opt = 1;    setsockopt (sock, SOL_SOCKET, SO_KEEPALIVE, &opt, sizeof(opt));        return sock;}

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