linux-kernel - [PATCH 5.4 088/152] selftests/bpf: test_progs use another shell exit on non-actions

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Date:   Thu, 20 Aug 2020 11:20:55 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jesper Dangaard Brouer <brouer@...hat.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andriin@...com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 088/152] selftests/bpf: test_progs use another shell exit on non-actions

From: Jesper Dangaard Brouer <brouer@...hat.com>

[ Upstream commit 3220fb667842a9725cbb71656f406eadb03c094b ]

This is a follow up adjustment to commit 6c92bd5cd465 ("selftests/bpf:
Test_progs indicate to shell on non-actions"), that returns shell exit
indication EXIT_FAILURE (value 1) when user selects a non-existing test.

The problem with using EXIT_FAILURE is that a shell script cannot tell
the difference between a non-existing test and the test failing.

This patch uses value 2 as shell exit indication.
(Aside note unrecognized option parameters use value 64).

Fixes: 6c92bd5cd465 ("selftests/bpf: Test_progs indicate to shell on non-actions")
Signed-off-by: Jesper Dangaard Brouer <brouer@...hat.com>
Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
Acked-by: Andrii Nakryiko <andriin@...com>
Link: https://lore.kernel.org/bpf/159410593992.1093222.90072558386094370.stgit@firesoul
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/testing/selftests/bpf/test_progs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
index a7d06724c18c2..48bbe8e0ce48d 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -7,6 +7,8 @@
 #include <argp.h>
 #include <string.h>
 
+#define EXIT_NO_TEST		2
+
 /* defined in test_progs.h */
 struct test_env env;
 
@@ -585,7 +587,7 @@ int main(int argc, char **argv)
 	free(env.subtest_selector.num_set);
 
 	if (env.succ_cnt + env.fail_cnt + env.skip_cnt == 0)
-		return EXIT_FAILURE;
+		return EXIT_NO_TEST;
 
 	return env.fail_cnt ? EXIT_FAILURE : EXIT_SUCCESS;
 }
-- 
2.25.1