linux-kernel - Re: [RFC PATCH 12/12] selftests/seccomp: Add powerpc support

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Date:	Wed, 15 Jul 2015 08:16:49 -0700
From:	Kees Cook <keescook@...omium.org>
To:	Michael Ellerman <mpe@...erman.id.au>
Cc:	"linuxppc-dev@...abs.org" <linuxppc-dev@...abs.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Andy Lutomirski <luto@...capital.net>,
	Will Drewry <wad@...omium.org>, strosake@...ux.vnet.ibm.com,
	bogdan.purcareata@...escale.com
Subject: Re: [RFC PATCH 12/12] selftests/seccomp: Add powerpc support

On Wed, Jul 15, 2015 at 12:37 AM, Michael Ellerman <mpe@...erman.id.au> wrote:
> Wire up the syscall number and regs so the tests work on powerpc.
>
> Signed-off-by: Michael Ellerman <mpe@...erman.id.au>

Acked-by: Kees Cook <keescook@...omium.org>

-Kees

> ---
>  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 51adb9afb511..05fcdb974df6 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>
> @@ -1209,6 +1210,10 @@ 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
> @@ -1242,7 +1247,7 @@ 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;
>         }
> @@ -1406,6 +1411,8 @@ 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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