Re: [PATCH] sysfs: change permissions for /sys from 0755 to 0555

[Vitaly Kuznetsov <vitty@altlinux.ru>]

On Sun, 18 Dec 2011 18:32:18 -0800, ebiederm@xmission.com wrote:
> Vitaly Kuznetsov <vitty@altlinux.ru> writes:
>
>> There is a misleading difference between /proc and /sys permissions, 
>> /proc is
>> 0555 and /sys is 0755. But
>> as it is impossible to create or unlink something in /sys it would 
>> be nice to
>> have same permissions.
>
> Where does this difference matter?  This doesn't look like something
> that could matter in practice.  If this does matter in practice this
> change deserves a comment and a fuller explanation.

This matters only for programs which 'read' permissions instead of 
'testing' them, but it's a challenge to imagine such program.

>
> The change itself seems reasonable and probably worth making as 
> general
> cleanup.
>

Let's consider it cleanup-only. The main idea is: /proc and /sys 
permissions must be the same as they are really the same.