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Re: [Gcl-devel] Re: unexec and fedora core 4
From: |
Camm Maguire |
Subject: |
Re: [Gcl-devel] Re: unexec and fedora core 4 |
Date: |
09 Dec 2005 10:17:50 -0500 |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 |
Juho Snellman <address@hidden> writes:
> <address@hidden> wrote:
> > Greetings! I am a developer of GCL, which shares unexec with emacs.
> > I have noticed on certain recent Fedora Core 4 machines, binaries
> > produced with unexec cannot mprotect memory (allocated with brk)
> > PROT_EXEC (returning EACCESS, i.e. permission denied), whereas
> > binaries output by ld can do so just fine. This does not vary with
> > exec-shield or randomize_va_space settings, and appears quite machine
> > specific. The same binary which functions perfectly normally on one
> > fc4 machine shows this failure only on another machine. I have as yet
> > been unable to correlate this with dynamic library placement, or other
> > settings in /proc/sys.
>
> Just a guess, but this might be related to SELinux. Do the machines
> have differences in /etc/selinux/config?
>
Bingo! (I think) The config files are identical, but the problem
machine has a 'strict' subdirectory with a host of files and options.
Any idea of what I should look for herein, and what this could have to
do with unexec vs ld?
Thank you so much!
> --
> Juho Snellman
>
>
>
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> address@hidden
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>
>
>
--
Camm Maguire address@hidden
==========================================================================
"The earth is but one country, and mankind its citizens." -- Baha'u'llah
[Gcl-devel] Re: unexec and fedora core 4, Richard M. Stallman, 2005/12/09