要查看您拥有的权限,请使用show grants
命令。
我已记录了一些其他命令,您可以使用它们来检查是否满足条件:
http://pastebin.com/Dvsdxh9Y
我需要对文档进行补充说明。请确保:
- 父目录有执行权限
- 必须明确授予FILE权限。(GRANT FILE on . TO user@localhost)
- 您已刷新权限
- 您已注销并重新登录
父目录权限示例:
mysql> \! ls -ld `dirname /home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg`
drwxrwxr--. 2 jlam jlam 4096 May 12 14:22 /home/jlam/code/projectName/doc/filesForTesting/images
mysql> select hex(LOAD_FILE('/home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg'));
+-------------------------------------------------------------------------------------------------------------+
| hex(LOAD_FILE('/home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg')) |
+-------------------------------------------------------------------------------------------------------------+
| NULL |
+-------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
mysql> \! chmod o+x /home/jlam/code/projectName/doc/filesForTesting/images
mysql> \! ls -ld `dirname /home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg`
drwxrwxr-x. 2 jlam jlam 4096 May 12 14:22 /home/jlam/code/projectName/doc/filesForTesting/images
mysql> select hex(LOAD_FILE('/home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg'));
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| hex(LOAD_FILE('/home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg'))
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| FFD8FFE1001845786966000049492A00080000000000000000000000FFEC00114475636B7900010004000000500000FFE10407687474703A2F2F6E732E61646F62652E636F6D2F7861702F312E302F003C3F787061636B657420626567696E3D22EFBBBF222069643D2257354D304D7043656869487
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1 row in set (0.00 sec)
用户权限示例:
16:38:09 (getImages) ~/code/projectName/doc/filesForTesting/images$ mysql -u eventCal -p eventCal
输入密码:
mysql> show grants;
+-----------------------------------------------------------------------------------------------------------------+
| Grants for eventCal@localhost |
+-----------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'eventCal'@'localhost' IDENTIFIED BY PASSWORD '*xxxxx' |
| GRANT ALL PRIVILEGES ON `tmp`.* TO 'eventCal'@'localhost' |
| GRANT ALL PRIVILEGES ON `eventCalTesting`.* TO 'eventCal'@'localhost' |
| GRANT ALL PRIVILEGES ON `eventCal`.* TO 'eventCal'@'localhost' |
| GRANT ALL PRIVILEGES ON `eventCal_categoryMigration`.* TO 'eventCal'@'localhost' |
+-----------------------------------------------------------------------------------------------------------------+
共 5 行(0.00 秒)
mysql> select hex(LOAD_FILE('/home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg'));
+-------------------------------------------------------------------------------------------------------------+
| hex(LOAD_FILE('/home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg')) |
+-------------------------------------------------------------------------------------------------------------+
| NULL |
+-------------------------------------------------------------------------------------------------------------+
共 1 行(0.00 秒)
在其他 root 会话中:
mysql> grant file ON *.* to eventCal@localhost;
授权成功,受影响的行数为0,用时0.00秒
mysql> flush privileges;
刷新权限成功,受影响的行数为0,用时0.00秒
回到用户会话,我仍然无法加载文件
mysql> select hex(LOAD_FILE('/home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg'));
+-------------------------------------------------------------------------------------------------------------+
| hex(LOAD_FILE('/home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg')) |
+-------------------------------------------------------------------------------------------------------------+
| NULL |
+-------------------------------------------------------------------------------------------------------------+
1行记录已返回,用时0.00秒
.....但是如果我注销并重新登录:
mysql> exit
再见
16:40:14 (getImages) ~/code/projectName/doc/filesForTesting/images$ mysql -u eventCal -p eventCal
输入密码:
mysql> select hex(LOAD_FILE('/home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg'));
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| hex(LOAD_FILE('/home/jlam/code/projectName/doc/filesForTesting/images/imageTest01.jpg'))
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| FFD8FFE1001845786966000049492A00080000000000000000000000FFEC00114475636B7900010004000000500000FFE10407687474703A2F2F6E732E61646F62652E636F6D2F7861702F312E302F003C3F787061636B657420626567696E3D22EFBBBF222069643D2257354D304D7043656869487
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------