Date: Sun, 07 Jun 1998 21:44:16 +0100 From: Brian Somers <brian@Awfulhak.org> To: John Polstra <jdp@polstra.com> Cc: Brian Somers <brian@Awfulhak.org>, toj@gorillanet.gorilla.net, current@FreeBSD.ORG Subject: Re: IP Packet Aliasing Broke? Message-ID: <199806072044.VAA24222@awfulhak.org> In-Reply-To: Your message of "Sun, 07 Jun 1998 11:52:38 PDT." <199806071852.LAA17184@austin.polstra.com>
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> > Now all we need is
> >
> > char *dlfind(const char *, int *major, int *minor)
> ...
> > Has anyone any objections to me implementing dlfind() ?
>
> Yes -- I object for several reasons. I'll save the biggest one
> for last.
>
> First, the dlfind() interface is too specific to the object format,
> for starters. ELF shared libraries have only major version numbers;
> they don't have minor versions.
Ok, I didn't know that :-I
> Second, when loading shared libraries programmatically using dlopen(),
> the established convention is that the shared library should simply be
> named "foo.so" without any version number. The installation process
> should make sure that the library (or a symlink to it) is installed in
> a location known to the application ("/usr/libdata/ppp/libalias.so"?).
This makes sense (why didn't I think of that?) :-)
> But really, why does ppp use dlopen to load libalias at all? Why not
> simply link it in like other libraries? I've heard the bloat-based
> arguments, but they look pretty bogus to me. Consider this:
[.....]
The bloat I was concerned with was more to do with the installation
disk footprint rather than the in-core footprint - I don't really
care (within reason) how big it is, once it can be loaded.
Having said that, after I added deflate capabilities and the M$CHAP
code was donated, we had libdes & libz to contend with too.....
resulting in some .ifdefs in the Makefile (that still don't work
properly in ``make release'').
Soooo, I guess I really need to fix src/release/Makefile and stop
mucking around with dlopen() altogether (despite the hours of
enjoyment I'll lose :-).
> John
> --
> John Polstra jdp@polstra.com
> John D. Polstra & Co., Inc. Seattle, Washington USA
> "Self-knowledge is always bad news." -- John Barth
--
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <brian@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour....
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