From mboxrd@z Thu Jan 1 00:00:00 1970 From: lm@mcvoy.com (Larry McVoy) Date: Wed, 4 Jan 2017 09:10:33 -0800 Subject: [TUHS] the guy who brought up SVr4 on Sun machines In-Reply-To: <586d2abb.A5j4GovJtyzlD+AQ%schily@schily.net> References: <20170104024127.GN12264@mcvoy.com> <20170104033512.GA22116@mcvoy.com> <586d234d.vf4JCu1Ye3gumwfc%schily@schily.net> <20170104164630.GA3405@mcvoy.com> <586d2abb.A5j4GovJtyzlD+AQ%schily@schily.net> Message-ID: <20170104171033.GC3405@mcvoy.com> On Wed, Jan 04, 2017 at 06:02:51PM +0100, Joerg Schilling wrote: > Larry McVoy wrote: > > > > Note that the Svr4 kernel was derived from the SunOS-4.0 kernel. > > > > I was in the kernel group at Sun at the time. The pictures I posted > > are of the guy that did the bring up. > > > > In no way was SVr4 even remotely derived from the SunOS 4.0 kernel. > > I cannot confirm this at all. > > I have access to both SunOS-4.x and Solaris sources and it is obvious that the I'm not sure how you have legal access to the SunOS 4.x code. I'd love a copy of that source but so far as I know it's locked up. > SVr4 and Solaris kernel code is very similar. Sure it's similar. The process was: untar the SVr4 code take anything useful from the SunOS code try and make it compat If you want to call that derived from that's your call. In my mind "derived from" would mean start with the SunOS code and make it SVr4 compat. That is *not* what AT&T paid $200M to have happen. They knew that System V was a non-starter and they wanted all the SunOS goodness in System V.