How to move storage OEMs to Samba 4.0 ?

[Andrew Bartlett]

On Sat, 2012-06-23 at 09:23 +0300, Alexander Bokovoy wrote:
> On Sat, Jun 23, 2012 at 1:40 AM, Andrew Bartlett <abartlet at samba.org> wrote:
> > On Fri, 2012-06-22 at 08:35 -0700, Jeremy Allison wrote:
> >> On Thu, Jun 21, 2012 at 10:10:16PM -0400, simo wrote:
> >> >
> >> > I would say also that the actual vfs ABI should not change, that doesn't
> >> > mean the rest of samba internal are untouchable, but why penalize people
> >> > that use exclusively the VFS interface as published ?
> >> >
> >> > I generally agree with all, although I would prefer if we made an effort
> >> > not to change the VFS ABI in a minor release. I am not to ask to be
> >> > strict about that, the vfs is large enough that we may not hold to the
> >> > promise, but I would like to avoid seeing deliberate ABI change without
> >> > a good reason .. "because we can"
> >>
> >> I agree. I wouldn't break the ABI without good cause also, but
> >> we only promise API compatibility, just like the Linux kernel
> >> and for the same reason.
> >
> > What is the VFS API?
> >
> > Does it include all the other Samba functions that a VFS module could
> > potentially call?
> >
> > (As an example of what I mean, a passdb module AB wrote recently started
> > calling become_root()/unbecome_root())
> The module does not call become_root()/unbecome_root(). Instead, the
> callback for smbldap SASL bind operation is called under
> become_root()/unbecome_root() from within smbldap code. All passdb use
> is actually done with become_root()/unbecome_root() already.

Ahh, thanks.  But my memory is you did have a module that did this, and
it worked?

Putting aside this example, my point is just that the functions in the
Samba VFS API could potentially be quite broad.  For example, we
maintained for ages some lp_ helpers, and I presume some modules call
DEBUG().

Andrew Bartlett
-- 
Andrew Bartlett                                http://samba.org/~abartlet/
Authentication Developer, Samba Team           http://samba.org