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Date:      Fri, 04 Oct 2013 17:14:58 -0400
From:      Jung-uk Kim <jkim@FreeBSD.org>
To:        Konstantin Belousov <kostikbel@gmail.com>,  Sevan / Venture37 <venture37@gmail.com>
Cc:        jlh@freebsd.org, java@FreeBSD.org
Subject:   Re: JNA broken with r251668 as libc.so cant be loaded
Message-ID:  <524F2FD2.3020801@FreeBSD.org>
In-Reply-To: <20131004152000.GS41229@kib.kiev.ua>
References:  <524DFB7D.2000207@gmail.com> <20131004050824.GK41229@kib.kiev.ua> <524E934D.70303@gmail.com> <20131004152000.GS41229@kib.kiev.ua>

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On 2013-10-04 11:20:00 -0400, Konstantin Belousov wrote:
> On Fri, Oct 04, 2013 at 02:07:09PM +0400, Sevan / Venture37 wrote:
>> On 04/10/2013 09:08, Konstantin Belousov wrote:
>>> Does the source contain some workaround for Linux, already ?
>>> Linux uses script for libc.so for very long time, and should
>>> have the same issue unless code explicitely dlopen()s libc.so.6
>>> or such.
>> 
>> 
>> No 
>> https://svn.java.net/svn/jna~svn/trunk/jnalib/test/com/sun/jna/LibraryLoadTest.java
>
>> 
> I do not know what should I see in the pointer you provided, and
> how it implies the answer 'No' to my question.
> 
> I just verified dlopen("libc.so") on some fresh Linux box, and the
> function returned expected error '/lib/libc.so: invalid ELF
> header'.

I haven't verified it but it seems to have special case for Linux.
Please see:

https://github.com/twall/jna/blob/master/src/com/sun/jna/NativeLibrary.java#L206
https://github.com/twall/jna/blob/master/src/com/sun/jna/NativeLibrary.java#L741
https://github.com/twall/jna/blob/master/src/com/sun/jna/NativeLibrary.java#L768

Jung-uk Kim
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