From efe5f9c0a7beb91efd8405468f19bbd6802e4e5d Mon Sep 17 00:00:00 2001 From: Jesper Dangaard Brouer Date: Tue, 13 Jun 2017 15:17:19 +0200 Subject: [PATCH] selftests/bpf: make correct use of exit codes in bpf selftests The selftests depend on using the shell exit code as a mean of detecting the success or failure of test-binary executed. The appropiate output "[PASS]" or "[FAIL]" in generated by tools/testing/selftests/lib.mk. Notice that the exit code is masked with 255. Thus, be careful if using the number of errors as the exit code, as 256 errors would be seen as a success. There are two standard defined exit(3) codes: /usr/include/stdlib.h #define EXIT_FAILURE 1 /* Failing exit status. */ #define EXIT_SUCCESS 0 /* Successful exit status. */ Fix test_verifier.c to not use the negative value of variable "results", but instead return EXIT_FAILURE. Fix test_align.c and test_progs.c to actually use exit codes, before they were always indicating success regardless of results. Signed-off-by: Jesper Dangaard Brouer Acked-by: Daniel Borkmann Reviewed-by: Fengguang Wu Signed-off-by: David S. Miller --- tools/testing/selftests/bpf/test_align.c | 2 +- tools/testing/selftests/bpf/test_progs.c | 2 +- tools/testing/selftests/bpf/test_verifier.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/bpf/test_align.c b/tools/testing/selftests/bpf/test_align.c index 1426594fdf6b..bccebd935907 100644 --- a/tools/testing/selftests/bpf/test_align.c +++ b/tools/testing/selftests/bpf/test_align.c @@ -428,7 +428,7 @@ static int do_test(unsigned int from, unsigned int to) } printf("Results: %d pass %d fail\n", all_pass, all_fail); - return 0; + return all_fail ? EXIT_FAILURE : EXIT_SUCCESS; } int main(int argc, char **argv) diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c index fec13ab84fca..f10493d4c37c 100644 --- a/tools/testing/selftests/bpf/test_progs.c +++ b/tools/testing/selftests/bpf/test_progs.c @@ -497,5 +497,5 @@ int main(void) test_bpf_obj_id(); printf("Summary: %d PASSED, %d FAILED\n", pass_cnt, error_cnt); - return 0; + return error_cnt ? EXIT_FAILURE : EXIT_SUCCESS; } diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c index cabb19b1e371..4ee4708b0d60 100644 --- a/tools/testing/selftests/bpf/test_verifier.c +++ b/tools/testing/selftests/bpf/test_verifier.c @@ -5418,7 +5418,7 @@ static int do_test(bool unpriv, unsigned int from, unsigned int to) } printf("Summary: %d PASSED, %d FAILED\n", passes, errors); - return errors ? -errors : 0; + return errors ? EXIT_FAILURE : EXIT_SUCCESS; } int main(int argc, char **argv) -- 2.20.1