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Date: Mon, 11 Mar 2024 15:44:35 -0400
From: Rich Felker <dalias@libc.org>
To: enh <enh@google.com>
Cc: sjf5462@rit.edu, Florian Weimer <fweimer@redhat.com>,
	Andreas Schwab <schwab@suse.de>, Alejandro Colomar <alx@kernel.org>,
	Thorsten Glaser <tg@mirbsd.de>, 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>,
	Iker Pedrosa <ipedrosa@redhat.com>,
	Christian Brauner <christian@brauner.io>
Subject: Re: [musl] Re: Tweaking the program name for <err.h> functions
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On Mon, Mar 11, 2024 at 12:05:11PM -0700, enh wrote:
> Android's libc actually does do this for everything except for
> first-stage `init`, the one process that doesn't have a /dev/null
> equivalent available yet:
> https://android.googlesource.com/platform/bionic/+/master/libc/bionic/libc_init_common.cpp#358

In the absence of /dev/null, you could probably call pipe() and close
the unwanted end. This works with no fs available, and has the "bonus"
that you'll get a nice SIGPIPE crash if you accidentally try to write
anything to it.

Rich