Re: [gNewSense-users] Binary blob in Xen patch?

[Sam Geeraerts]

Karl Goetz wrote:
> On Wed, 2008-07-23 at 13:10 +0200, Sam Geeraerts wrote:
> > Karl Goetz wrote:
> > > On Wed, 2008-07-23 at 10:37 +0200, Sam Geeraerts wrote:
> > > > In section debian/binary-custom.d/xen/patchset there's a big file called 
> > > > 001-xen-base.patch. It contains three kinds of things:
> > > which package is this in exactly?
> > Oh, oops. It's in the Linux kernel.
> >
> > > > Any other ideas on where those blobs came from or whether they actually 
> > > > have any use?
> > > tried to grep -R for the filenames? its ugly, but it'll often uncover
> > > things.
> > > kk
> > Yep. The Web didn't give me any clues either.
>
>
> diff -Naur ubuntu-hardy/arch/x86/ia32/syscall32_syscall-xen.S
> ubuntu-hardy-xen/arch/x86/ia32/syscall32_syscall-xen.S
> --- ubuntu-hardy/arch/x86/ia32/syscall32_syscall-xen.S  1970-01-01
> 01:00:00.000000000 +0100
> +++ ubuntu-hardy-xen/arch/x86/ia32/syscall32_syscall-xen.S  2008-04-09
> 13:17:22.000000000 +0100
> @@ -0,0 +1,28 @@
> +/* 32bit VDSOs mapped into user space. */
> +
>
> <trim>
>
> +syscall32_int80:
> +   .incbin "arch/x86/ia32/vsyscall-int80.so"
> +syscall32_int80_end:
> +
> +#endif
>
> <trim>
> Would this '.incbin' make you worry? Its made me wonder if the .so
> files /are/ accidents.

Damn, I think I did a grep for vsyscall_int80 earlier. Anyway, the diff 
for the Makefile above that looks like it adds "int80" to a list and 
then builds some libraries. I think this is where the file gets built, 
but I'll have to check that more thoroughly.

> It may be worth me meantioning these files dont exist in the debian
> source tree either.
> address@hidden:~/MyDownloads/linux-kernel-debian/clean/linux-2.6-2.6.25$
> grep -R vsyscall-int80 *
> scripts/namespace.pl:                       $def{$name}[0] eq
> "arch/x86/kernel/vsyscall-int80_32.o" &&
> Athough that file does refer to 2.0/2.1 kernels:
> #   Tuned for 2.1.x kernels with the new module handling, it will
> #   work with 2.0 kernels as well.
> #
> #   Last change 2.6.9-rc1, adding support for separate source and object
> #   trees.
>
> kk