From c385d0db30f3c0bf687a080c38e8088c342116a3 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Thu, 23 Jul 2015 20:21:10 +1000 Subject: 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 Acked-by: Kees Cook --- tools/testing/selftests/seccomp/seccomp_bpf.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'tools/testing/selftests') diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c index c5abe7fd7590..2303a8dff9a2 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 -- cgit v1.2.3-59-g8ed1b