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linux - chmod命令之后安装php应用提示文件依然不可写

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Jun 06, 2016 pm 08:52 PM

apachehttpdlinuxphp

我想要在自己的Linux系统下安装一些开源的php应用，譬如phpFreeChat，我把它放在/var/www/html/freechat底下，然后对freechat下的data文件夹中的public和private文件夹使用了chmod 777命令，然后使用ls -al data命令可以看到这样的结果：

drwxr-xr-x. 4 root root 4096 Jun 17 15:07 .
drwxr-xr-x. 13 root root 4096 Jun 17 15:22 ..
drwxrwxrwx. 2 root root 4096 Jun 17 15:07 private
drwxrwxrwx. 3 root root 4096 Jun 17 15:07 public

但是在浏览器里输入http://localhost/freechat 却会得到这样的错误：

phpFreeChat cannot be initialized, please correct these errors:

/var/www/html/freechat/src/../data/private is not writeable
/var/www/html/freechat/src/../data/private/cache can't be created
/var/www/html/freechat/src/../data/private/cache is not writeable
/var/www/html/freechat/src/../data/private/cache is not readable
cannot create /var/www/html/freechat/src/../data/public/themes/default
cannot create /var/www/html/freechat/src/../data/public/themes/default
/var/www/html/freechat/src/../data/private/chat can't be created
/var/www/html/freechat/src/../data/private/chat is not writeable
/var/www/html/freechat/src/../data/private/chat is not readable
/var/www/html/freechat/src/../data/private/chat/s_d0ba868e1391b6c0d897996049a68ada can't be created
/var/www/html/freechat/src/../data/private/chat/s_d0ba868e1391b6c0d897996049a68ada is not writeable
/var/www/html/freechat/src/../data/private/chat/s_d0ba868e1391b6c0d897996049a68ada is not readable

还尝试过用递归的chmod命令，错误依旧。

利用代码

<?php echo exec('whoami'); ?>

发现用户名是apache，然后在/etc/httpd/conf/httpd.conf里发现User和Group都是apache。请问之所以显示文件不可写是因为这个用户的设置问题吗？如果是的话我该怎么修改？如果不是的话又是什么问题导致的呢？

回复内容：

drwxr-xr-x. 4 root root 4096 Jun 17 15:07 .
drwxr-xr-x. 13 root root 4096 Jun 17 15:22 ..
drwxrwxrwx. 2 root root 4096 Jun 17 15:07 private
drwxrwxrwx. 3 root root 4096 Jun 17 15:07 public

但是在浏览器里输入http://localhost/freechat 却会得到这样的错误：

phpFreeChat cannot be initialized, please correct these errors:

/var/www/html/freechat/src/../data/private is not writeable
/var/www/html/freechat/src/../data/private/cache can't be created
/var/www/html/freechat/src/../data/private/cache is not writeable
/var/www/html/freechat/src/../data/private/cache is not readable
cannot create /var/www/html/freechat/src/../data/public/themes/default
cannot create /var/www/html/freechat/src/../data/public/themes/default
/var/www/html/freechat/src/../data/private/chat can't be created
/var/www/html/freechat/src/../data/private/chat is not writeable
/var/www/html/freechat/src/../data/private/chat is not readable
/var/www/html/freechat/src/../data/private/chat/s_d0ba868e1391b6c0d897996049a68ada can't be created
/var/www/html/freechat/src/../data/private/chat/s_d0ba868e1391b6c0d897996049a68ada is not writeable
/var/www/html/freechat/src/../data/private/chat/s_d0ba868e1391b6c0d897996049a68ada is not readable

还尝试过用递归的chmod命令，错误依旧。

利用代码

<?php echo exec('whoami'); ?>

问题解决了，竟然是SELinux从中作梗。使用setenforce 0以后便成功了。

应该是这个原因，你用chown -rf apache.apache /var/www/html/freechat/data/试试

chmod 777 -R /var/www/html/freechat/data

递归修改权限
或者向 @joyqi 说的把目录owner改成apache

chown -R apache:apache /var/www/html/freechat

Rpm系一定要记得setenforce 0,暂时关闭selinux后再测试

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