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[v4,3/3] selftests/user_events: Add test cases when event is disabled

Message ID 20230626111344.19136-4-sunliming@kylinos.cn
State Accepted
Commit d34a271accf8fad00e05aad2cecb9fb53a840a94
Headers show
Series [v4,1/3] tracing/user_events: Fix incorrect return value for writing operation when events are disabled | expand

Commit Message

sunliming June 26, 2023, 11:13 a.m. UTC 
When user_events are disabled, it's write operation should return -EBADF.
Add this test cases.

Signed-off-by: sunliming <sunliming@kylinos.cn>
---
 tools/testing/selftests/user_events/ftrace_test.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/tools/testing/selftests/user_events/ftrace_test.c b/tools/testing/selftests/user_events/ftrace_test.c
index d33bd31425db..c9dc99bcafec 100644
--- a/tools/testing/selftests/user_events/ftrace_test.c
+++ b/tools/testing/selftests/user_events/ftrace_test.c
@@ -297,6 +297,10 @@  TEST_F(user, write_events) {
 	io[0].iov_base = &reg.write_index;
 	io[0].iov_len = sizeof(reg.write_index);
 
+	/* Write should return -EBADF when event is not enabled */
+	ASSERT_EQ(-1, writev(self->data_fd, (const struct iovec *)io, 3));
+	ASSERT_EQ(EBADF, errno);
+
 	/* Enable event */
 	self->enable_fd = open(enable_file, O_RDWR);
 	ASSERT_NE(-1, write(self->enable_fd, "1", sizeof("1")))