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Message-ID: <20120121010554.GA8306@brightrain.aerifal.cx>
Date: Fri, 20 Jan 2012 20:05:54 -0500
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: Dynamic linker refactoring
Hi all,
After the recent dynamic linker fixes, I've looked into refactoring
(mainly eliminating logic duplication) and cleaning up the dynamic
linker. As a heads-up, I'm leaning towards stripping out the vdso
(linux-gate) support at the dynamic linker level entirely, and instead
using Nik's original design for vdso-assisted clock_gettime which can
work with static linking too. This cuts out some complexity and code
duplication in the dynamic linker (at the expense of duplicating the
same code elsewhere for use outside the dynamic linker), but the real
benefit is that we don't have to worry about the kernel devs doing
something stupid and polluting the userspace symbol namespace (and
potentially redirecting functions to do the wrong thing) if they add
stuff to the vdso that doesn't belong there. If anyone's against these
changes or wants to discuss them more, please reply in this thread in
the next day or so..
Rich
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