✘HPUX ??

[Eric S. Raymond]

Mark Atwood via devel <devel at ntpsec.org>:
> Hilariously, I don't know where we can get a HPUX lab machine.
> 
> I want to support it, but I also want us to stick to "POSIX only, unless
> it's really important".
> 
> How much HPUX only code is there?  What does it do?

I didn't think there was any left (I thought I'd removed it all), but
upon close examination I find there is one obscure conditional in the
ISC code.  It, and the code it guards.

Here's what's going on.  Apparently, at some point some HP-UX system
failed to completely support interface scanning under IPv6.  The
symptom was that a a SIOCGLIFCONF ioctl might return an error with an
ENOENT value, in which case all you can do is log an error and return
failure.

This might have been fixed on HP-UX since the code was last touched;
in that case the code will never fire.  On non-HP-UX systems it will
never fire anyway.  On HP-UX systems that still have the bug, I think
removing this span will only have the effect that the ISC library
falls through to the handling for any non-EINVAL error and returns
ISC_R_UNEXPECTED rather than ISC_R_FAILURE

So unless Gary has spotted something I haven't, this code can be dropped.
I'd probably have removed it already if it weren't hiding in a pretty
obscure corner.
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		<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>

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