How to package execute-on-stack programs?
Michael K. Johnson
johnsonm at redhat.com
Wed Sep 3 21:52:00 UTC 2003
On Thu, Aug 28, 2003 at 03:13:44PM +0200, Enrico Scholz wrote:
> A program suffering from this is qemu; I tried the chstk tool, but
> it fails with
That's from an earlier way of marking. There's now a different way
of doing it. I don't think that new way is yet supported in the
kernel that we shipped, but I may misremember... The latest kernel
in RHN (and tomorrow in rawhide) has the latest exec-shield in it.
If you build something with gas directly, you can pass the
--execstack option to gas; otherwise, use the compiler argument
-Wa,--execstack to tell the compiler to tell gas to request
an executable stack.
Alternatively, if you have assembler sources, you can also add
.section .note.GNU-stack,"x"; .previous
to the assembler source; that's what the --execstack option does.
How that needs to be factored into qemu building I don't know;
as you point out, that may be a bit complex...
"He that composes himself is wiser than he that composes a book."
Linux Application Development -- Ben Franklin
More information about the devel