pipe_ret 1065 tools/testing/selftests/x86/protection_keys.c int pipe_ret, vmsplice_ret; pipe_ret 1069 tools/testing/selftests/x86/protection_keys.c pipe_ret = pipe(pipe_fds); pipe_ret 1071 tools/testing/selftests/x86/protection_keys.c pkey_assert(pipe_ret == 0);