priv

net_device结构体 相对于linux做了相当大简化，其结构及含义如下： struct net_device { char name[MAX_NETDEV_NAME_LEN]; //用于存放网络设备的设备名称 struct vmm_device *dev; //？？？ const struct net_device_ops *netdev_ops; //上层ops接口 const struct ethtool_ops *ethtool_ops; //可选ops接口 unsigned int state; //网络设备接口的状态 unsigned int link_state; //链接状态 void *priv; /* Driver specific private data */ void *nsw_priv; /* VMM virtual packet switching layer specific private data.*/ void *net_priv; /* VMM specific private data -Usecase is currently undefined */ unsigned char dev_addr[MAX_NDEV_HW_ADDRESS]; //硬件接口地址 unsigned int hw_addr_len; //硬件地址长度

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: We have lost our original keystore used to generate the CSR during a server failure. We have a backup of the private key (.key file) and the original CSR (.csr file). Is it possible to reconstruct the keystore with those? Since all the instructions for creating the certificate chains require the original keystore. This is for use with Tomcat 7.0.27. Thanks 回答1: Yes, that should be possible. But in addition to the private key you will also need the certificate (not csr) that was returned by the CA. The steps can be found here 回答2: If you have

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: In my website, I am using MySQL database. I am using a webservice where in I do all my database related manipulations. Now In one of the methods of that webservice, I get the following Error. select command denied to user ''@'' for table '' What could be wrong? Below is the code where I get that error. I tried debugging and found that it fails at the line MySqlDataReader result1 = command1.ExecuteReader(); Here is my code: String addSQL = "Select Max(`TradeID`) from `jsontest`.`tbl_Positions"; MySqlConnection objMyCon = new MySqlConnection

误删除用户解决办法 删除用户 删除用户 mysql> truncate mysql.user;Query OK, 0 rows affected (0.05 sec)​mysql> select user,host from mysql.user;Empty set (0.00 sec) 重启mysql服务并登录 [root@db01 ~]# systemctl restart mysqld[root@db01 ~]# mysqlERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)#登录错误 恢复用户 当登录不上去首先停掉正在运行的数据库 [root@db01 ~]# systemctl stop mysqld[root@db01 ~]# ps -ef |grep mysqldroot 7905 7664 0 03:22 pts/1 00:00:00 grep --color=auto mysqld 跳过授权表，跳过网络启动数据库 [root@db01 ~]# mysqld_safe --skip-grant-tables --skip-networking & -----跳过授权表，跳过网络[1] 7908[root@db01 ~]# 191101 03:26:40

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm building two applications which will share some data in common schema. I'm using MySQL as RDBMS. Here is my first schema ( test_schema_1 ): And second ( test_schema_2 ): I recently learned that I can do JOINs between multiple schemas. When I'm connected with root user (unlimited access to everything), I do: SELECT * FROM TEST_SCHEMA_2.USERS U JOIN TEST_SCHEMA_1.MASTER_USERS MU ON U.MASTER_ID = MU.ID JOIN TEST_SCHEMA_2.ROLES R ON U.ROLE_ID = R.ID WHERE MU.APP_ID = 'darth_vader@death.star'; And get what I expect! This looks very cool for

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: In Android 4.x, it was enough to put an APK-file into /system/priv-app, and the package-manager recognized that new file and (un-)installed the corresponding application or service. Since Android L, it seems to be not enough to just put the file into that directory - a reboot of the system is required to force Android to recognize that change. Has anyone an idea how to circumvent this? Maybe with any setprop ctl.restart xxx or by killing a dedicated service? EDIT: Here are some logs from logcat: 1. Move APK from /system to /system/priv-app (

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I accidentally deleted the root user on my local dev setup of MAMP/MySQL running on OS X. There are no other users created to get back into MySQL. This is a mild nightmare can't seem to do anything without root . Found this: http://hack2live.blogspot.com/2009/04/restore-repair-reset-mysql-root.html which seems like exactly what I need. I also don't think a reinstall of MAMP will do the trick, as a lot of my cursory searches yielded people who had tried without success. Does anyone know of an OSX friendly way to recreate root @ localhost back

前面两个小节分别对rpc服务端和客户端的建立流程做了详细的分析，也就是说rpc客户端和服务器端已经能够进行正常的通信了（rpc客户端已经通过connect链接上rpc服务器了），那么这一小节主要根据一个实际的例子来分析一个完整的rpc通信过程。 下面以客户端创建逻辑卷（volume）为例来分析rpc的通信过程，就以下面这个客户端的命令开始： gluster volume create test-volume server3:/exp3 server4:/exp4 先简单看看glusterfs的客户端是怎样开始提交rpc请求的，提交准备过程流程图如下： 从上面的流程图可以看出真正开始提交 rpc 请求调用还是从具体命令的回调函数开始发起的，上面的流程图主要展示的是准备工作，下面从具体命令的回调函数开始分析，这里分析的实例是创建逻辑卷的命令，执行的函数是 cli_cmd_volume_create_cbk ，主要实现代码如下： 1 proc = &cli_rpc_prog->proctable[GLUSTER_CLI_CREATE_VOLUME]; // 从rpc程序表中选择对应函数 2 3 frame = create_frame (THIS, THIS->ctx->pool); // 创建帧 4 5 ret = cli_cmd_volume_create_parse (words,

一、JPEG编码原理 1.原理框图 2.各个步骤 【零偏置(Level offset)】 将无符号的数变为有符号的数，使得出现大数的概率减小 【DCT变换】 将时域上的转变为频域上的，低频的集中在左上角，高频的在右下角，这样大部分的数据基本在左上角 【量化】 低频数据多且人眼敏感，细量化，高频数据少不敏感，粗量化；同理，根据人眼对亮度敏感高于色度的原理，亮度细量化，色度粗量化； 【之字形扫描（Zig_zag scan）】：使非零的数集中在前面，后面的连0用EOB表示 【编码】 DC 系数编码： 由于直流系数 F(0,0)反映了该子图像中包含的直流成分，通常较大，又由 于两个相邻的子图像的直流系数通常具有较大的相关性，所以对 DC 系数采用 差值脉冲编码（DPCM）,即对本像素块直流系数与前一像素块直流系数的差 值进行无损编码。 二、JPEG解码原理 1.主要流程 2.文件格式 2.1 Segment 的组织形式 JPEG 在文件中以 Segment 的形式组织，它具有以下特点： （1）均以 0xFF 开始，后跟 1 byte 的 Marker 和 2 byte 的 Segment length（包含表示 Length 本身所占用的 2 byte，不含“0xFF” + “Marker” 所占用的 2 byte）； （3）Data 部分中，0xFF 后若为 0x00

报错内容：The MySQL server is running with the --secure-file-pri option so it cannot execute this. 报错原因：mysql文件的导入和导出路径有默认的设置，即 secure-file-priv,当传入或传出的csv文件路径与默认的路径冲突时就会报错。 解决办法： 　　　　打开my.cnf文件：vim /etc/my.cnf 　　　　 　　　 在my.cnf 文件中添加一行内容：secure-file-priv="" 　　　　重启mysql：service mysqld restart 　　　　进入mysql：mysql -uroot -p 　　　　输入密码：******** 　　　　查看secure-file-priv设置：show variables like '%secure%' 　　　　此时显示如下，secure_file_priv 的值为空： 　　　　 　　　　表示已修改成功。 来源： https://www.cnblogs.com/lovehansong/p/11764287.html