Re: CVS commit: src/sys/kern

[Maxime Villard <max%m00nbsd.net@localhost>]

Le 07/08/2015 11:38, Christos Zoulas a écrit :
> In article <21928.1438883980%splode.eterna.com.au@localhost>,
> matthew green  <mrg%eterna.com.au@localhost> wrote:
> > ya - this might actually break some linux binary packages, where
> > there is a well-defined interface to executing a library.
> >
> > i think this part should be reverted.

In fact, I remember that at the time I wrote this patch - more than a
year ago -, I had read in the ELF spec that libraries normally don't
have an entry point, but that some do only to display a copyright notice,
for "convenience", just in case someone ./ them.

That would be consistent with the example Christos has given.

For what other purpose would a library have an entry point?
Theoretically, a library that has an entry point is not a library.

> Indeed:
>
> [5:16am] 1003#/lib/libc.so.6
> GNU C Library (EGLIBC) stable release version 2.10.1, by Roland McGrath et al.
> Copyright (C) 2009 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.
> There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
> PARTICULAR PURPOSE.
> Compiled by GNU CC version 4.4.1.
> Compiled on a Linux >>2.6.24-23-server<< system on 2009-10-07.
> Available extensions:
>          crypt add-on version 2.1 by Michael Glad and others
>          GNU Libidn by Simon Josefsson
>          Native POSIX Threads Library by Ulrich Drepper et al
>          BIND-8.2.3-T5B
> For bug reporting instructions, please see:
> <http://www.eglibc.org/issues/>.
>
> christos