From: Alejandro Colomar <alx@kernel.org>
To: Thorsten Glaser <tg@mirbsd.de>
Cc: Rich Felker <dalias@libc.org>,
musl@lists.openwall.com, NRK <nrk@disroot.org>,
Guillem Jover <guillem@hadrons.org>,
libc-alpha@sourceware.org, libbsd@lists.freedesktop.org,
"Serge E. Hallyn" <serge@hallyn.com>,
"Skyler Ferrante (RIT Student)" <sjf5462@rit.edu>,
Iker Pedrosa <ipedrosa@redhat.com>,
Christian Brauner <christian@brauner.io>
Subject: Re: [musl] Re: Tweaking the program name for <err.h> functions
Date: Mon, 11 Mar 2024 01:46:44 +0100 [thread overview]
Message-ID: <Ze5UdYsZ6H9i6lMd@debian> (raw)
In-Reply-To: <Pine.BSM.4.64L.2403110017360.18628@herc.mirbsd.org>
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Hi Thorsten,
On Mon, Mar 11, 2024 at 12:19:27AM +0000, Thorsten Glaser wrote:
> Rich Felker dixit:
>
> >the string literal, because the string literal appears in modular
> >library code that gets called from multiple utilities, then printing
> >an error message (and even worse, exiting, if you do that too), rather
> >than returning meaningful error information up to the caller for it to
> >handle/display, is just really sloppy, low-quality programming.
>
> Libraries totally should not call exit and thus not err/errx,
> and warn/warnx is… also questionable at best.
>
> But modularised code that builds a shared object and a few
> binaries using it? Why not.
>
> The thing I don’t get is why changing __progname is desired,
> but I guess everyone has use cases for something.
setuid programs. Consider that a setuid program accidentally opens a
privileged file in fd 2. Now what happens if a random user can trigger
that accident, and write arbitrary text to a privileged file, just by
calling that setuid program with execlp("su", "inject this stuff", ...)?
Bad stuff.
Have a lovely night!
Alex
>
> bye,
> //mirabilos
> --
> (gnutls can also be used, but if you are compiling lynx for your own use,
> there is no reason to consider using that package)
> -- Thomas E. Dickey on the Lynx mailing list, about OpenSSL
--
<https://www.alejandro-colomar.es/>
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next prev parent reply other threads:[~2024-03-11 0:47 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Zeo-oJOyN9YQXVb1@debian>
[not found] ` <ZepcO2pa0cwsqr3u@thunder.hadrons.org>
2024-03-08 0:52 ` Alejandro Colomar
2024-03-09 15:02 ` Rich Felker
2024-03-09 15:49 ` Alejandro Colomar
2024-03-09 18:35 ` Andreas Schwab
2024-03-09 18:46 ` Alejandro Colomar
2024-03-09 19:18 ` Markus Wichmann
2024-03-09 19:25 ` Rich Felker
2024-03-09 21:44 ` Thorsten Glaser
2024-03-10 6:01 ` NRK
2024-03-10 13:17 ` Alejandro Colomar
2024-03-10 14:01 ` NRK
2024-03-10 19:39 ` Rich Felker
2024-03-10 22:25 ` Alejandro Colomar
2024-03-10 23:22 ` Thorsten Glaser
2024-03-10 23:44 ` Rich Felker
2024-03-11 0:19 ` Thorsten Glaser
2024-03-11 0:46 ` Alejandro Colomar [this message]
2024-03-11 14:46 ` Skyler Ferrante (RIT Student)
2024-03-11 15:09 ` Andreas Schwab
2024-03-11 15:30 ` Skyler Ferrante (RIT Student)
2024-03-11 18:23 ` Florian Weimer
2024-03-11 18:48 ` Skyler Ferrante (RIT Student)
2024-03-11 19:05 ` enh
2024-03-11 19:44 ` Rich Felker
2024-03-11 20:35 ` enh
2024-03-11 19:47 ` Rich Felker
2024-03-11 20:08 ` Skyler Ferrante (RIT Student)
2024-03-11 20:39 ` enh
2024-03-11 21:21 ` Laurent Bercot
2024-03-11 22:05 ` Thorsten Glaser
2024-03-12 0:18 ` Gabriel Ravier
2024-03-12 0:43 ` Rich Felker
2024-03-12 3:23 ` Gabriel Ravier
2024-03-12 14:44 ` Rich Felker
2024-03-12 13:54 ` Florian Weimer
2024-03-12 14:21 ` Zack Weinberg
2024-03-12 14:31 ` Florian Weimer
2024-03-12 14:42 ` Rich Felker
2024-03-12 19:25 ` Zack Weinberg
2024-03-12 21:19 ` Rich Felker
2024-03-13 8:28 ` Florian Weimer
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