Re: compat: autofs v5 packet size ambiguity - update

[Ian Kent]

On Thu, 2012-02-23 at 09:48 +0800, Ian Kent wrote:
> On Wed, 2012-02-22 at 08:12 -0800, Linus Torvalds wrote:
> > On Wed, Feb 22, 2012 at 1:32 AM, Ian Kent <raven@xxxxxxxxxx> wrote:
> > >
> > > Oh, DOH ...
> > >
> > > The process mounting the autofs mount is passing the pipe it will use
> > > for communication via a mount option so we can do this right in
> > > fill_super.
> > 
> > No, we really cannot.
> 
> Sorry, I think your wrong this time.

On second thought, I suppose other user space users don't "have" to use
mount(2) ....

> 
> > 
> > The autofs "mount" is done by fork + execve("mount").
> 
> It's done like this when mounting things inside an already mounted
> indirect autofs mount or when mounting things on autofs direct mount
> triggers but, in version 5, mount(2) has always used to mount autofs
> file systems.
> 
> Ian


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