如何更改linux套接字文件的权限？

我有一个程序,它创建一个套接字,然后我想更改套接字文件的权限：

ret_val = chmod(filename,0777);

,但它不会改变,即使ret_val为0.如果我在常规文件上尝试相同的操作,它也可以.

有任何想法吗？

P.S：我以root身份运行程序,因此它拥有所需的所有权限.

解决方法

In the Linux implementation,sockets which are visible in the file system
honor the permissions of the directory they are in. Their owner,
group and their permissions can be changed. Creation of a new socket
will fail if the process does not have write and search (execute) permission on the directory the socket is created in. Connecting to the
socket object requires read/write permission. This behavior differs
from many BSD-derived systems which ignore permissions for UNIX domain
sockets. Portable programs should not rely on this feature for security.

因此,如果要控制套接字上的权限,为了便于移植,您应该控制包含套接字的目录的权限.

（编辑：安卓应用网）

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