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From: Bruce Momjian <bruce@momjian.us>
To: Wolfgang Walther <walther@technowledgy.de>
Cc: Thomas Munro <thomas.munro@gmail.com>
Cc: peter@eisentraut.org, Christophe Pettus <xof@thebuild.com>
Cc: Andrew Dunstan <andrew@dunslane.net>
Cc: PostgreSQL Bugs <pgsql-bugs@lists.postgresql.org>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Subject: Re: Regression tests fail with musl libc because libpq.so can't be loaded
Date: Wed, 20 Mar 2024 09:37:30 -0400
Message-ID: <ZfrmmtMRLN6svkvv@momjian.us> (raw)
In-Reply-To: <ZfrmN4WHuJgD95fw@momjian.us>
References: <CA+hUKG+Tq3GK7bPd03N0Eox3YY4-Hjd7qQjo_QZFjdbhTqQGQA@mail.gmail.com>
	<CA+hUKGK9LUq=uygBRFt3vFO1RL+_scsT4+hMkvea_zTttHZ59Q@mail.gmail.com>
	<ZfolyUQw9z1zxX58@momjian.us>
	<CA+hUKG+Y1D2Bv9v0GbYrhiQ+mhf=6Xj2_viiATnBVFShkfO4VQ@mail.gmail.com>
	<4093813.1710899588@sss.pgh.pa.us>
	<CA+hUKGKNK5V8XwwJJZm36s3EUy8V51xu4XiE8=26n=Wq3OGd4A@mail.gmail.com>
	<4095435.1710900216@sss.pgh.pa.us>
	<CA+hUKGK2cSx3dveMqBD+E9N=zJ0WawBcbk_jnPqmdWBM0DT_3Q@mail.gmail.com>
	<477fa513-6bf0-456d-8d24-1e22a19df671@technowledgy.de>
	<ZfrmN4WHuJgD95fw@momjian.us>

On Wed, Mar 20, 2024 at 09:35:51AM -0400, Bruce Momjian wrote:
> On Wed, Mar 20, 2024 at 10:39:20AM +0100, Wolfgang Walther wrote:
> > I also put together a PoC of what was mentioned in musl's mailing list:
> > Instead of clobbering environ at all, exec yourself again with padded argv0.
> > This works, too. Attached.
> 
> It is hard to imagine why we would add an extra exec on every Linux
> server start for this.

I guess we could conditionally exec only if we find we must, but then
such exec cases would be rare and rarely tested.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  Only you can decide what is important to you.





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