[Vm-dev] Illumos port

Eliot Miranda eliot.miranda at gmail.com
Sat May 5 00:11:01 UTC 2012

On Fri, May 4, 2012 at 4:04 PM, Colin Putney <colin at wiresong.com> wrote:

> Hi folks,
> As was mentioned in the Squeak Board minutes, I've been working on
> getting Squeak running on SmartOS. (SmartOS is a newish distribution
> of Illumos, which is a fork of OpenSolaris, which is apparently no
> longer open, now that Oracle owns it. Anyway, it's a flavour of
> Solaris.)
> Attached is a patch that lets me build the VM and open an image in a
> SmartOS zone.
> I ran into a few issues, which I'll detail below:
> 1) I tried to do a proper autoconf check for the existence of headers
> such as <sys/sockio.h> and <sys/ucontext.h>, but I ran afoul of very
> strange behaviour from the libtool script that my regenerated
> configure script created. (Geez, how many levels of code generation do
> these GNU guys think is healthy?) I was able to create the config.h
> file that I wanted, but then linking didn't work anymore. For now I've
> just used the __sun__ preprocessor definition (apparently
> automatically defined by the compiler) for conditional compilation.
> 2) It looks like the image runs ok, but when I try to connect a VNC
> client (SmartOS has no GUI), the VM receives a SIGPOLL/SIGIO signal
> and exits. Fixing that probably requires more significant changes than
> I've made so far, so if anybody has suggestions on how to tackle it,
> I'd love to hear them.

You at least need to establish a signal handler for SIGIO (should be done
in platforms/unix/vm/aio.c).  Or it could be that the signal handler is
one-shot, and on the second SIGPOLL/SIGIO the VM quits.  You need the
signal handler for sigaction to not be one-shot, which you'd control by
using sigaction instead of the simple signal in aio.c.  check the manual
page for signal and sigaction and see what they say about SA_RESETHAND.

> If there's some other method of submitting the patch that would be
> more convenient of the maintainers, I'm happy to do that instead.

A tar of the changed files as well as patch is as good as it gets I think.


> Colin

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