动态链接库加载出错:cannot restore segment prot after reloc: Permission denied

谁践踏了优雅 2021-09-12 01:30 190阅读 0赞

作为菜鸟,几次想学LINUX的动态链接库,在网上也找了不少资源,却每次都被同一个问题挡在门外.就是在我执行程序时,总是遇到加载so文件时的错误.我按照网上说的,又是改LD\_LIBRARY\_PATH又是改ld.so.conf配置文件,结果都无济于事.后来找人一问,才知道原来不是它的错误,而是 Linux 内核中提供的强制访问控制 (MAC)系统SELINUX的原因.

在百度上找到了一篇文章,很好地解决了我的问题.先摘下来:

cannot restore segment prot after reloc: Permission denied

2009-02-03 22:55

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      环境：Linux localhost.localdomain 2.6.18-92.el5PAE&nbsp; 
     <br style="line-height: normal;">apache2+php4整合完毕后启动apache 时报错 
     <br style="line-height: normal;"> 
     <span style="line-height: normal; color: #808080;">root@localhost fgn]# /usr/local/apache/bin/apachectl restart<br style="line-height: normal;">httpd: Syntax error on line 53 of /usr/local/apache/conf/httpd.conf: Cannot load /usr/local/apache/modules/libphp4.so into server: /usr/local/apache/modules/libphp4.so: cannot restore segment prot after reloc: Permission denied</span> 
     <br style="line-height: normal;">解决： 
     <br style="line-height: normal;">这是因为SELINUX的问题，需要关闭SELINX，执行： 
     <span style="line-height: normal; color: #0000ff;">/usr/sbin/setenforce 0</span> 
     <br style="line-height: normal;">引用： 
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     <p style="line-height: normal;">When packaging an application on RHEL or CentOS, you may receive the following error:</p> 
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      <pre style="line-height: normal;">cannot restore segment prot after reloc: Permission denied</pre> 
     </div> This is likely due the the SE Linux setting being set to "enforcing" 
     <br style="line-height: normal;">. 
     <br style="line-height: normal;"> 
     <strong style="line-height: normal;">To Temporarily disable enforcement on a running system</strong> 
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      <pre style="line-height: normal;">/usr/sbin/setenforce 0</pre> 
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     <br style="line-height: normal;"> 
     <strong style="line-height: normal;">To permanently disable enforcement during a system startup</strong> 
     <br style="line-height: normal;">change "enforcing" to "disabled" in ''/etc/selinux/config'' and reboot. 
     <br style="line-height: normal;">. 
     <br style="line-height: normal;">By default, CentOS 5 has the SE Linux feature set to "enforcing". We are looking into ways to removing these steps. 
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转自：[http://kb.cnblogs.com/a/1393348/][http_kb.cnblogs.com_a_1393348]

[http_kb.cnblogs.com_a_1393348]: http://kb.cnblogs.com/a/1393348/