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Date: Tue, 18 Apr 2023 21:39:56 -0500
To: Bruno Haible <bruno@clisp.org>
Cc: cygwin@cygwin.com
Subject: Re: posix_spawn facility
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From: Eric Blake via Cygwin <cygwin@cygwin.com>
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On Wed, Apr 19, 2023 at 12:10:34AM +0200, Bruno Haible wrote:
> Eric Blake wrote:
> > we now have implementations in the wild that differ in behavior, and
> > use security as a reason for the divergence, it is worth getting that
> > clarified in POSIX.  I'll file a bug against POSIX shortly
> 
> For the reference, the systems that return ENOEXEC for posix_spawnp
> attempting to execute a script without #! marker are:
>   - glibc/Linux ≥ 2.15
>   - glibc/Hurd ≥ 2.33 (commit 13adfa34aff03fd9f1c1612b537a0d736ddb6c2b)
>   - musl libc

POSIX issue now filed as
https://www.austingroupbugs.net/view.php?id=1674; although we'll have
to see if my wording is acceptable or if it settles on something a bit
looser (such as implementation-defined as to whether an sh fallback is
attempted, rather than outright forbidden).

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org


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