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Re: closed file descriptors on HP-UX

From: Bruno Haible
Subject: Re: closed file descriptors on HP-UX
Date: Fri, 04 Jan 2019 11:55:15 +0100
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Florian Weimer wrote:
> > Oh well. Then it's even POSIX compliant. But HP-UX (and possibly
> > Windows) is the only platform where things are really like this -
> > otherwise we would have seen more platforms where the diffutils
> > 'new-file' test fails.
> glibc does this as well if the process underwent an AT_SECURE
> transition as part of execve; see __libc_check_standard_fds.

Thanks for this info. Fortunately
  1) This code is only enabled if the child program is setuid -
     so, the only GNU package affected is coreutils.
  2) The substitute file descriptors are fully open file descriptors,
     not in a bizarre state like on HP-UX.


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