Re: How the backend knows it's being searched by syncprov?

[Howard Chu <hyc@symas.com>]

Pierangelo Masarati wrote:

> Howard Chu wrote:
>
> > If we really need global knowledge of this control we can put the 
> > #define's and such back into slap.h and controls.c.
> >    #define o_sync_mode ...
> >    slap_cids.sc_LDAPsync
> >
> > would probably be the most useful.
>
>
> I see another problem: this control is dynamically registered, so 
> o_sync_mode could yield unexpected results if the control is not 
> registered but its presence is tested by some pice of code.

Yes, we could move its initialization / parser back into 
slapd/controls.c if necessary.

> I guess only statically (i.e. always) registered controls should make 
> it into the slap_control_ids structure, or a tri-state mech 
> (present/not present/undefined) should be used for testing, where 
> "undefined" could return the same value as "not present" but without 
> crashing! (e.g. all "undefined" cids could point to slot [0] of 
> o_controls, which should be intentionally left NULL for undefined 
> controls?)

That sounds like a good idea.

--
 -- Howard Chu
 Chief Architect, Symas Corp.       Director, Highland Sun
 http://www.symas.com               http://highlandsun.com/hyc
 Symas: Premier OpenSource Development and Support