In message: <20100313170725.gw8...@hoeg.nl>
Ed Schouten <e...@80386.nl> writes:
: * M. Warner Losh <i...@bsdimp.com> wrote:
: > that sounds like a good idea. But it isn't as simple as changing all
: > the COMPAT_FREEBSDX in the .c code. There's also hooks in the syscall
: > glue generation that would be affected.
:
: Hmmm... Indeed.
:
: I thought a bit more about this and I realized it would be better if we
: wouldn't use a FreeBSD major number for this, but the actual
: __FreeBSD_version.
Hmmm, that might be harder. The problem is that when I want to run a
program from FreeBSD 3.0, I may need an interface that was in 3.0, but
was removed prior to 5.0 shipping. This means the kernel needs the
COMPAT_FREEBSD4 option right now to work. So things are kind of
confusing.
Under your plan, which __FreeBSD_version would we use here?
The COMPAT_FREEBSD_BACK_TO=3 would be the right setting here. This
may pick up a little extra junk, but would be clear to the user what
they are configuring.
Comments?
Warner
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