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authorMichael Ellerman <mpe@ellerman.id.au>2015-07-23 20:21:10 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2015-07-30 14:35:36 +1000
commitc385d0db30f3c0bf687a080c38e8088c342116a3 (patch)
treefe8feb020a909ce88ba418eb4328fd80b890dd59 /tools/testing
parent2449acc5348b94325e9374056b2cc3ed55816e96 (diff)
downloadop-kernel-dev-c385d0db30f3c0bf687a080c38e8088c342116a3.zip
op-kernel-dev-c385d0db30f3c0bf687a080c38e8088c342116a3.tar.gz
selftests/seccomp: Make seccomp tests work on big endian
The seccomp_bpf test uses BPF_LD|BPF_W|BPF_ABS to load 32-bit values from seccomp_data->args. On big endian machines this will load the high word of the argument, which is not what the test wants. Borrow a hack from samples/seccomp/bpf-helper.h which changes the offset on big endian to account for this. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'tools/testing')
-rw-r--r--tools/testing/selftests/seccomp/seccomp_bpf.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index c5abe7f..2303a8d 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? Unknown __BYTE_ORDER?!"
+#endif
#define SIBLING_EXIT_UNKILLED 0xbadbeef
#define SIBLING_EXIT_FAILURE 0xbadface
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