On Thu, Jul 23, 2015 at 3:21 AM, Michael Ellerman <m...@ellerman.id.au> wrote:
> Wire up the syscall number and regs so the tests work on powerpc.
This patch begs the question: this passes everything? (I was reminded
about syscall_restart while reading the patches. If everything passes,
it looks like powerpc exposes syscall_restart? Seems like ARM remains
the odd-arch-out on this. :P)
Thanks!
-Kees
>
> Acked-by: Kees Cook <keesc...@chromium.org>
> Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
> ---
> tools/testing/selftests/seccomp/seccomp_bpf.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c
> b/tools/testing/selftests/seccomp/seccomp_bpf.c
> index 2303a8dff9a2..a004b4cce99e 100644
> --- a/tools/testing/selftests/seccomp/seccomp_bpf.c
> +++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
> @@ -14,6 +14,7 @@
> #include <linux/filter.h>
> #include <sys/prctl.h>
> #include <sys/ptrace.h>
> +#include <sys/types.h>
> #include <sys/user.h>
> #include <linux/prctl.h>
> #include <linux/ptrace.h>
> @@ -1205,6 +1206,10 @@ TEST_F(TRACE_poke, getpid_runs_normally)
> # define ARCH_REGS struct user_pt_regs
> # define SYSCALL_NUM regs[8]
> # define SYSCALL_RET regs[0]
> +#elif defined(__powerpc__)
> +# define ARCH_REGS struct pt_regs
> +# define SYSCALL_NUM gpr[0]
> +# define SYSCALL_RET gpr[3]
> #else
> # error "Do not know how to find your architecture's registers and syscalls"
> #endif
> @@ -1238,7 +1243,7 @@ void change_syscall(struct __test_metadata *_metadata,
> ret = ptrace(PTRACE_GETREGSET, tracee, NT_PRSTATUS, &iov);
> EXPECT_EQ(0, ret);
>
> -#if defined(__x86_64__) || defined(__i386__) || defined(__aarch64__)
> +#if defined(__x86_64__) || defined(__i386__) || defined(__aarch64__) ||
> defined(__powerpc__)
> {
> regs.SYSCALL_NUM = syscall;
> }
> @@ -1402,6 +1407,8 @@ TEST_F(TRACE_syscall, syscall_dropped)
> # define __NR_seccomp 383
> # elif defined(__aarch64__)
> # define __NR_seccomp 277
> +# elif defined(__powerpc__)
> +# define __NR_seccomp 358
> # else
> # warning "seccomp syscall number unknown for this architecture"
> # define __NR_seccomp 0xffff
> --
> 2.1.0
>
--
Kees Cook
Chrome OS Security
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