From: Rich Felker <dalias@aerifal.cx>
To: musl@lists.openwall.com
Subject: Re: ldso: dlclose.
Date: Thu, 23 Aug 2012 08:48:16 -0400 [thread overview]
Message-ID: <20120823124816.GP27715@brightrain.aerifal.cx> (raw)
In-Reply-To: <5603ddad712718518eed1430f5d00450@exys.org>
On Thu, Aug 23, 2012 at 02:39:38PM +0200, Arvid E. Picciani wrote:
> On Sun, 19 Aug 2012 20:48:03 -0400, Rich Felker wrote:
>
> >To elaborate, removing a DSO from a process's address space is highly
> >non-trivial and error-prone.
>
> In fact it doesn't even work correctly in glibc.
> It's just that usually no one notices.
Indeed, and they closed my bug report about it as invalid. I've
refiled the bug with binutils, which has the -z nodelete option,
requesting that this option be made default. Only libraries
intentionally marked as unload-safe should be unloadable.
Anyway, unless the issue is fixed in binutils so that the vast
majority of libraries are marked non-unloadable, I don't see anything
we can do in musl. "glibc does it that way too" is not an excuse for
adding unsafe/non-robust behavior to musl.
Rich
next prev parent reply other threads:[~2012-08-23 12:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-19 16:26 musl
2012-08-20 0:48 ` Rich Felker
2012-08-22 22:41 ` Rich Felker
2012-08-23 12:39 ` Arvid E. Picciani
2012-08-23 12:48 ` Rich Felker [this message]
2012-08-23 16:02 ` orc
2012-08-23 18:01 ` Rich Felker
2012-08-24 7:52 ` musl
2012-08-24 12:27 ` Rich Felker
2012-08-24 13:54 ` musl
2012-08-24 17:46 ` Rich Felker
2012-08-25 7:54 ` boris brezillon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120823124816.GP27715@brightrain.aerifal.cx \
--to=dalias@aerifal.cx \
--cc=musl@lists.openwall.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/musl/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).