Re: syscall: sys_promote

[qiyong]

Alan Cox wrote:

> On Gwe, 2005-08-26 at 19:02 +0800, Coywolf Qi Hunt wrote:
>  
>
> > > 3) admins can `promote' a suspect process instead of killing it.
> > >
> > > Is it also generally useful in practice?  Thoughts?
> > >      
>
> The locking is wrong. At the moment the entire kernel assumes that a
> process uid is not changed by anyone else. After you've implemented uid
> locking/refcounting for tasks you can add the syscall but until then its
> not a good idea. I don't think its a good idea anyway - selinux can do
> far more useful things.

Indeed. "Also it's not obvious that locking can be done right (or that 
anybody cares). "
We can ignore it safely.  sys_promote is a different approach from 
selinux.  sys_promote is to let sysadmin manually manipulate a running 
process,
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