From: Markus Wichmann <nullplan@gmx.net>
To: musl@lists.openwall.com
Subject: Re: [musl] Cannot dlopen() an already loaded shared library by its SONAME name
Date: Tue, 11 Jan 2022 18:55:41 +0100 [thread overview]
Message-ID: <20220111175541.GB2046@voyager> (raw)
In-Reply-To: <CAMmqxguXGa2cswmRgVLnX=-4CvA8uRzRmfgXjNdTp73CrBXvrQ@mail.gmail.com>
On Tue, Jan 11, 2022 at 12:50:33PM +0100, Ilia K wrote:
> Hi!
>
> It turns out that `dlopen()` in musl cannot find the already loaded shared
> library using the library soname from the dynamic section, unlike glibc.
> [...]
> Do you have any plans to support it?
>
Given that this question already surfaced twice and was denied just as
often, I'm guessing no.
The reason for the behavior is that loading a library with explicit path
name is what you do with a plugin, and you don't necessarily want a
plugin's symbols to be visible to everyone. That's why a library loaded
by path name does not get a shortname set, and a shortname is what you
need to be able to find a library by just its name.
I would suggest always loading the library by its short name and setting
LD_LIBRARY_PATH if this is what you want. That behavior works
consistently across all libc implementations I know.
Ciao,
Markus
next prev parent reply other threads:[~2022-01-11 17:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-11 11:50 Ilia K
2022-01-11 17:55 ` Markus Wichmann [this message]
2022-01-11 21:30 ` Harmen Stoppels
2022-01-11 22:22 ` Rich Felker
2022-01-12 14:52 ` Harmen Stoppels
2022-01-12 16:58 ` Farid Zakaria
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