Date: Fri, 16 Apr 2010 12:06:02 +1200 From: Jonathan Chen <jonc@chen.org.nz> To: Xin LI <delphij@gmail.com> Cc: gerald@freebsd.org, freebsd-stable@freebsd.org Subject: Re: ifconfig-i386 on 8-STABLE/amd64 Message-ID: <20100416000602.GA79362@osiris.chen.org.nz> In-Reply-To: <g2wa78074951004151612yf4105587nfe9a547b62d77115@mail.gmail.com> References: <20100415215941.GA14428@osiris.chen.org.nz> <g2wa78074951004151612yf4105587nfe9a547b62d77115@mail.gmail.com>
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On Thu, Apr 15, 2010 at 04:12:11PM -0700, Xin LI wrote:
> Hi,
>
> On Thu, Apr 15, 2010 at 2:59 PM, Jonathan Chen <jonc@chen.org.nz> wrote:
> > ?? ??$ /compat/i386/sbin/ifconfig
> > ?? ??: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST>
> > ?? ?? ?? ??inet 192.168.1.10 netmask 0xffffff00 broadcast 192.168.1.255
> > ?? ?? ?? ??inet 192.168.1.11 netmask 0xffffffff broadcast 192.168.1.11
> > ?? ?? ?? ??inet 192.168.2.1 netmask 0xffffff00 broadcast 192.168.2.255
> > ?? ?? ?? ??inet 192.168.2.10 netmask 0xffffffff broadcast 192.168.2.10
> > ?? ?? ?? ??inet 192.168.2.12 netmask 0xffffffff broadcast 192.168.2.12
> > ?? ?? ?? ??inet 127.0.0.1 netmask 0xff000000
> > ?? ??ifconfig: ioctl(SIOCGIFINFO_IN6): Device not configured
> >
> > Why is the output from the 32-bit ifconfig severely mangled?
>
> My understanding is that 32-bit management tools like ifconfig is not
> supported on 64-bit FreeBSD. Someone has to sit down and write a
> compatibility layer for translating back and forth :(
Ah. The reason I ask is because wine's (32-bit) network-i/f iteration code
is breaking when running under amd64. It uses code similar to
ifconfig's to determine available network interfaces. I didn't expect
the read-only interface would break when crossing the 32 to 64 barrier.
Thanks for the analysis.
--
Jonathan Chen <jonc@chen.org.nz>
----------------------------------------------------------------------
"In mathematics you don't understand things.
You just get used to them."
- Johann von Neumann
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