From: Isaac Dunham <idunham@lavabit.com>
To: musl@lists.openwall.com
Subject: Re: static linking and dlopen
Date: Sat, 8 Dec 2012 23:30:59 -0800 [thread overview]
Message-ID: <20121208233059.f8616b22.idunham@lavabit.com> (raw)
In-Reply-To: <20121209025529.GF23126@port70.net>
On Sun, 9 Dec 2012 03:55:30 +0100
Szabolcs Nagy <nsz@port70.net> wrote:
> i think one could make a dso that has no dependency
> (all dependencies are linked into it including libc),
> and no pointers are passed (directly or indirectly)
> to types which are not entirely part of the abi
> between the dso and the main binary
> (ie no FILE* or anything that might have different
> internals on the two sides)
Under at least glibc, this is supported.
This is what gcc/ld does with "-static -shared".
> in that case dlopen() would work and even dlclose()
> can be safe (as the programmer has control over the
> entire code)
>
> of course care should be taken and it might not be
> very useful but one could implement loadable/unloadable
> plugins with static linking
--
Isaac Dunham <idunham@lavabit.com>
next prev parent reply other threads:[~2012-12-09 7:30 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-08 18:09 Paul Schutte
2012-12-08 20:47 ` Szabolcs Nagy
2012-12-09 20:02 ` Rob Landley
2012-12-08 22:52 ` Rich Felker
2012-12-08 23:17 ` Charlie Kester
2012-12-08 23:23 ` Rich Felker
2012-12-09 0:04 ` Paul Schutte
2012-12-09 0:16 ` Rich Felker
2012-12-09 15:24 ` Paul Schutte
2012-12-09 17:54 ` Rich Felker
2012-12-09 19:07 ` Szabolcs Nagy
2012-12-09 19:24 ` Rich Felker
2012-12-09 2:39 ` Szabolcs Nagy
2012-12-09 6:36 ` croco
2012-12-09 7:25 ` Isaac Dunham
2012-12-09 8:10 ` Charlie Kester
2012-12-09 10:08 ` croco
2012-12-09 11:46 ` Szabolcs Nagy
2012-12-09 15:11 ` Rich Felker
2012-12-09 20:43 ` Rob Landley
2012-12-08 23:29 ` Paul Schutte
2012-12-09 2:55 ` Szabolcs Nagy
2012-12-09 3:10 ` Rich Felker
2012-12-09 7:30 ` Isaac Dunham [this message]
2012-12-09 20:09 ` Rob Landley
2012-12-09 21:53 ` Rich Felker
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