From: Michael Ellerman <mpe@ellerman•id.au>
To: Kees Cook <keescook@chromium•org>
Cc: "linuxppc-dev@ozlabs•org" <linuxppc-dev@ozlabs•org>,
LKML <linux-kernel@vger•kernel.org>,
Andy Lutomirski <luto@amacapital•net>,
Will Drewry <wad@chromium•org>,
strosake@linux•vnet.ibm.com, bogdan.purcareata@freescale•com
Subject: Re: [RFC PATCH 11/12] selftests/seccomp: Make seccomp tests work on big endian
Date: Thu, 16 Jul 2015 13:41:19 +1000 [thread overview]
Message-ID: <1437018079.28475.5.camel@ellerman.id.au> (raw)
In-Reply-To: <CAGXu5j+CNxPSzA83UJDEdr_0G14qqX4yNdhr5+2YrisE8O6eeg@mail.gmail.com>
On Wed, 2015-07-15 at 08:16 -0700, Kees Cook wrote:
> On Wed, Jul 15, 2015 at 12:37 AM, Michael Ellerman <mpe@ellerman•id.au> wrote:
> > diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
> > index b2374c131340..51adb9afb511 100644
> > --- a/tools/testing/selftests/seccomp/seccomp_bpf.c
> > +++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
> > @@ -82,7 +82,13 @@ struct seccomp_data {
> > };
> > #endif
> >
> > +#if __BYTE_ORDER == __LITTLE_ENDIAN
> > #define syscall_arg(_n) (offsetof(struct seccomp_data, args[_n]))
> > +#elif __BYTE_ORDER == __BIG_ENDIAN
> > +#define syscall_arg(_n) (offsetof(struct seccomp_data, args[_n]) + sizeof(__u32))
> > +#else
> > +#error "wut?"
> > +#endif
>
> Ah-ha! Yes, thanks. Could you change the #error to something that
> describes the particular (impossible) failure condition? "wut? Unknown
> __BYTE_ORDER?!". Not a huge deal, but I always like verbose errors. :)
> Especially for "impossible" situations. :)
Yeah sorry that was a "quick hack" which got promoted into an actual patch.
Fixed to use your message.
cheers
next prev parent reply other threads:[~2015-07-16 3:41 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-15 7:37 [RFC PATCH 01/12] powerpc/kernel: Get pt_regs from r9 before calling do_syscall_trace_enter() Michael Ellerman
2015-07-15 7:37 ` [RFC PATCH 02/12] powerpc/kernel: Switch to using MAX_ERRNO Michael Ellerman
2015-07-16 22:42 ` Benjamin Herrenschmidt
2015-07-15 7:37 ` [RFC PATCH 03/12] powerpc/kernel: Change the do_syscall_trace_enter() API Michael Ellerman
2015-07-15 7:37 ` [RFC PATCH 04/12] powerpc: Drop unused syscall_get_error() Michael Ellerman
2015-07-15 7:37 ` [RFC PATCH 05/12] powerpc: Don't negate error in syscall_set_return_value() Michael Ellerman
2015-07-15 7:37 ` [RFC PATCH 06/12] powerpc: Rework syscall_get_arguments() so there is only one loop Michael Ellerman
2015-07-15 7:37 ` [RFC PATCH 07/12] powerpc: Use orig_gpr3 in syscall_get_arguments() Michael Ellerman
2015-07-15 7:37 ` [RFC PATCH 08/12] powerpc: Change syscall_get_nr() to return int Michael Ellerman
2015-07-15 7:37 ` [RFC PATCH 09/12] powerpc/kernel: Add SIG_SYS support for compat tasks Michael Ellerman
2015-07-15 15:12 ` Kees Cook
2015-07-16 3:38 ` Michael Ellerman
2015-07-15 7:37 ` [RFC PATCH 10/12] powerpc/kernel: Enable seccomp filter Michael Ellerman
2015-07-15 7:37 ` [RFC PATCH 11/12] selftests/seccomp: Make seccomp tests work on big endian Michael Ellerman
2015-07-15 15:16 ` Kees Cook
2015-07-16 3:41 ` Michael Ellerman [this message]
2015-07-15 7:37 ` [RFC PATCH 12/12] selftests/seccomp: Add powerpc support Michael Ellerman
2015-07-15 15:16 ` Kees Cook
2015-07-16 22:40 ` [RFC PATCH 01/12] powerpc/kernel: Get pt_regs from r9 before calling do_syscall_trace_enter() Benjamin Herrenschmidt
2015-07-17 4:41 ` Michael Ellerman
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