[TUHS] the guy who brought up SVr4 on Sun machines
schily at schily.net
Thu Jan 5 03:02:51 AEST 2017
Larry McVoy <lm at mcvoy.com> 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
SVr4 and Solaris kernel code is very similar. You could e.g. convert device
drivers easily from SunOS-4.x to Solaris and I did this for my drivers.
I remember one notable difference between SunOS-4.x and Svr4/Solaris:
The kernel function as_hole() has been renamed to as_gap() on request
from AT&T ;-)
On the other side, the kernels SVr3 and SVr4 are very different and it is close
to impossible to port a SVr3 device driver to SVr4.
EMail:joerg at schily.net (home) Jörg Schilling D-13353 Berlin
joerg.schilling at fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.org/private/ http://sourceforge.net/projects/schilytools/files/
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