Fwd: CMSG_LEN, CMSG_SPACE not there on illumos

[Andreas Schneider]

On Tuesday 28 April 2015 08:42:29 Jeremy Allison wrote:
> On Tue, Apr 28, 2015 at 10:41:15AM -0400, Gordon Ross wrote:
> > Hi all,
> > 
> > I tried building master on illumos a few days ago and I noticed that
> > this commit introduces some new places using CMSG_LEN, CMSG_SPACE etc.
> > which are not provided on illumos (and probably not on Solaris, but
> > I'm not sure about that).
> > 
> >   commit 190554c402f23a9eff1f20670e66f7b94a36b396
> >   Author: Volker Lendecke <vl at samba.org>
> >   Date:   Tue Dec 30 13:36:46 2014 +0000
> >   
> >     lib: Add msghdr.[ch]
> >     This is a little set of routines to deal with the ugly fd-passing
> >     macros.
> > 
> > I could attempt fixing this, but need some guidance.  I saw reference
> > to a standard defining CMSG_LEN, CMSG_SPACE etc. but I only found
> > Linux or BSD man pages etc.  Is these part of any official standard?
> > If so, can someone provide the URL?
> 
> http://man7.org/linux/man-pages/man3/cmsg.3.html
> 
> CONFORMING TO         top
> 
>        This ancillary data model conforms to the POSIX.1g draft, 4.4BSD-
>        Lite, the IPv6 advanced API described in RFC 2292 and SUSv2.
>        CMSG_ALIGN() is a Linux extension.
> 
> So it is in a POSIX draft, except for CMSG_ALIGN.

For CMSG_ALIGN take a look at:

https://git.samba.org/?p=socket_wrapper.git;a=blob;f=src/socket_wrapper.c;h=1188c4e538892088b01ec1c1bea728314b6a6765;hb=refs/heads/master#l3453

The others are available on Solaris, we test socket_wrapper on OpenIndiana.

-- 
Andreas Schneider                   GPG-ID: CC014E3D
Samba Team                             asn at samba.org
www.samba.org