Re: [gentoo-embedded] some uClibc experience

[Ned Ludd]

On Tue, 2003-11-18 at 08:45, Peter S. Mazinger wrote:
> On 18 Nov 2003, Ned Ludd wrote:
>
> > http://www.research.ibm.com/trl/projects/security/ssp/
> I didn't meant the original one, the needed modifications to remove
> guard/smash from libgcc (the original one adds it to libgcc, but the
> changes of gentoo put it into glibc. Or should it be present in libc and
> libgcc?

IMO that symbol should not be provided by libgcc.a.
I think todays security update of glibc happens to fix all this.

>
> Peter
>
>
> > On Mon, 2003-11-17 at 13:37, Peter S. Mazinger wrote:
> > > On 17 Nov 2003, Ned Ludd wrote:
> > >
> > > > On Sun, 2003-11-16 at 19:46, Peter S. Mazinger wrote:
> > > > > On 12 Nov 2003, Ned Ludd wrote:
> > > > >
> > > > > > On Wed, 2003-11-12 at 16:31, Peter S. Mazinger wrote:
> > > > > > > There are problems building some of the binaries with propolice enabled
> > > > > > > gcc, mainly the .hidden support in binutils has to be "hidden" from gcc,
> > > > > > > but as I can see (read), the glibc version does not work flawlessly
> > > > > > > either.
> > > > > > >
> > > > > > Have you successfully used ssp with uclibc?
> > > > > It worked (somehow, not quite correct, and some packages where not
> > > > > rebuildable) at the time where uClibc had support for LIBGCC_FUNCTIONS
> > > > > (adding functions from libgcc to libc) This was the only way I got a
> > > > > system running it (__guard and __smash... where added to libc). Since then
> > > > > I cannot modify buildroot so that I get a system running, segfaults on all
> > > > > the line (tested only with gcc-3.3.x and protector 3.3-5). I think the
> > > > > solution would be to add the needed functions to uClibc (and remove them
> > > > > from libgcc!!!).
> > > >
> > > > One of the hardened-gcc version introduced guard symbols to libgcc.a.
> > > > I'm pretty sure this no longer should be the case if your running ~arch
> > > > as they are in fact getting introduced into glibc.
> > > > If you care to hack the functionaly into uClibc I'll point you at the
> > > > glibc version from etoh http://dev.gentoo.org/~solar/ssp/guard.c
> > > Where do I find the modified protector patch for gcc?
> > >
> > > Peter
> >
-- 
Ned Ludd <solar@g.o>
Gentoo Linux Developer