Re: Is it feasible to cross-build compat5x binary?

From: Bruce Evans (bde_at_zeta.org.au)
Date: 10/27/05

  • Next message: db: "Non-executable stack" 
    Date: Thu, 27 Oct 2005 15:21:02 +1000 (EST)
To: "M. Warner Losh" <imp@bsdimp.com>

    On Tue, 25 Oct 2005, M. Warner Losh wrote:

    > In message: <20051024064605.A44523@cons.org>
    > Martin Cracauer <cracauer@cons.org> writes:
    > : ELF object files are timestamped. But there's some elf-cmp out there.
    >
    > Elf .o's are timestampped,

    Script started on Thu Oct 27 15:17:31 2005
    ttyv2:bde@epsplex:/tmp/z> echo "int i = 1;" >z.c
    ttyv2:bde@epsplex:/tmp/z> cc -c z.c
    ttyv2:bde@epsplex:/tmp/z> mv z.o z.o~
    ttyv2:bde@epsplex:/tmp/z> cc -c z.c
    ttyv2:bde@epsplex:/tmp/z> md5 z.o~ z.o
    MD5 (z.o~) = c92e2bbb5a0e8b4f05eced238762dde1
    MD5 (z.o) = c92e2bbb5a0e8b4f05eced238762dde1
    ttyv2:bde@epsplex:/tmp/z> cmp z.o~ z.o
    ttyv2:bde@epsplex:/tmp/z> exit

    Script done on Thu Oct 27 15:18:14 2005

    > but Elf executables are 100% reproducible,
    > except when people go out of their way to not make them so. Like
    > adding the date or person builder.

    True.

    Bruce
    _______________________________________________
    freebsd-security@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-security
    To unsubscribe, send any mail to "freebsd-security-unsubscribe@freebsd.org"

  • Next message: db: "Non-executable stack"

    Relevant Pages