I see. It pays, then, to disambiguate between a Linux "system" (which is
the typical Emacs case) and Linux O/S-based, essentially embedded,
environments. In the "system" case, /proc/self/exe should be the
recommended method, I'd think. In embedded cases, whatever is appropriate
in those environments is what should be used.

On Thu, Sep 19, 2024 at 9:44 AM Po Lu <luangruo@yahoo.com> wrote:

> Ship Mints <shipmints@gmail.com> writes:
>
> > Even if you umount /proc, it will remain until active process
> > references to /proc nodes are closed. If one tries umount /proc
> > outside of a shutdown sequence, Emacs is the least of her
> > worries. This is not a practical deterrent.
>
> It is possible to run systems with Linux (the kernel) without mounting
> /proc at all, and Emacs is very much interested in functioning correctly
> there.  Moreover, the value of /proc/self/exe is sometimes completely
> meaningless, as on Android, where Emacs is loaded into
> /system/bin/app_process64 as a shared library.
>
>