Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   sunliming <sunliming@kylinos.cn>
To:     mhiramat@kernel.org, beaub@linux.microsoft.com,
        rostedt@goodmis.org, shuah@kernel.org
Cc:     linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
        linux-kselftest@vger.kernel.org, kelulanainsley@gmail.com,
        sunliming <sunliming@kylinos.cn>
Subject: [PATCH 3/3] selftests/user_events: Add test cases when event is disabled
Date:   Thu,  8 Jun 2023 09:15:54 +0800
Message-Id: <20230608011554.1181097-4-sunliming@kylinos.cn>
In-Reply-To: <20230608011554.1181097-1-sunliming@kylinos.cn>
References: <20230608011554.1181097-1-sunliming@kylinos.cn>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

When user_events are disabled, it's write operation should be fail. Add
this test cases.

Signed-off-by: sunliming <sunliming@kylinos.cn>
---
 tools/testing/selftests/user_events/ftrace_test.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/user_events/ftrace_test.c b/tools/testing/selftests/user_events/ftrace_test.c
index d33bd31425db..d3240a97f23d 100644
--- a/tools/testing/selftests/user_events/ftrace_test.c
+++ b/tools/testing/selftests/user_events/ftrace_test.c
@@ -297,6 +297,9 @@ TEST_F(user, write_events) {
 	io[0].iov_base = &reg.write_index;
 	io[0].iov_len = sizeof(reg.write_index);
 
+	/* Write should fail when event is not enabled */
+	ASSERT_EQ(-1, writev(self->data_fd, (const struct iovec *)io, 3));
+
 	/* Enable event */
 	self->enable_fd = open(enable_file, O_RDWR);
 	ASSERT_NE(-1, write(self->enable_fd, "1", sizeof("1")))
-- 
2.25.1