Date: Mon, 08 Sep 2003 01:11:31 -0700 From: Lev Walkin <vlm@netli.com> To: Dmitry Morozovsky <marck@rinet.ru> Cc: hackers@freebsd.org Subject: Re: if bpf fd's select()able? Message-ID: <3F5C39B3.2010001@netli.com> In-Reply-To: <20030908120036.V55683@woozle.rinet.ru> References: <20030907233940.M18589@woozle.rinet.ru> <3F5BB991.2050601@netli.com> <20030908113632.R55683@woozle.rinet.ru> <3F5C3549.8050607@netli.com> <20030908120036.V55683@woozle.rinet.ru>
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Dmitry Morozovsky wrote:
> On Mon, 8 Sep 2003, Lev Walkin wrote:
>
> [snip]
>
> LW> > LW> Yes, you're missing the interactive mode.
> LW> > LW> Refer to BIOCIMMEDIATE in the bpf(4) manual page.
> LW> >
> LW> > Unfortunately not ;-)
> LW>
> LW> Fortunately, yes.
> LW>
> LW> > if (ioctl(fd, BIOCPROMISC, NULL) == -1)
> LW> > err(1, "can't set promisc mode");
> LW> > if (ioctl(fd, BIOCIMMEDIATE, &yes) == -1)
> LW> > err(1, "can't set IMMEDIATE mode");
> LW>
> LW> Are you sure that "yes" variable holds the truth value?
>
> Yes. Just attaching file from wrong directory.
>
> However, I found a (really stupid, yeah) bug: the first parameter of select()
> in this test case should be fd+1, not 1 ;-)
Unfortunately, this could not possibly be the case, if your system's
documentation is in sync with the reality:
=== select(2) ===
For historical reasons,
select() will always examine the first 256 descriptors.
=== cut ===
--
Lev Walkin
vlm@netli.com
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