Re: [PATCH -mm 8/8] user ns: implement user ns unshare

From: Valdis . Kletnieks
Date: Thu Jan 04 2007 - 17:24:23 EST


On Thu, 04 Jan 2007 19:07:00 GMT, Frederik Deweerdt said:
> On Thu, Jan 04, 2007 at 12:13:10PM -0600, Serge E. Hallyn wrote:
> > From: Serge E. Hallyn <serue@xxxxxxxxxx>
> > Subject: [PATCH -mm 8/8] user ns: implement user ns unshare
> >
> > Implement CLONE_NEWUSER flag useable at clone/unshare.
> >
> > Signed-off-by: Serge E. Hallyn <serue@xxxxxxxxxx>
> > ---
>
> > int copy_user_ns(int flags, struct task_struct *tsk)
> > {
> > - struct user_namespace *old_ns = tsk->nsproxy->user_ns;
> > + struct user_namespace *new_ns, *old_ns = tsk->nsproxy->user_ns;
> > int err = 0;
> ^^^^^^^^^^^^
> The "= 0" is superfluous here.

Umm? bss gets cleared automagically, but when did we start auto-zeroing
the stack?

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