[PATCH v2 3/3] selftests/user_events: Add test cases when event is disabled
From: sunliming
Date: Thu Jun 08 2023 - 23:05:24 EST
When user_events are disabled, it's write operation should be fail. Add
this test cases.
Signed-off-by: sunliming <sunliming@xxxxxxxxxx>
---
tools/testing/selftests/user_events/ftrace_test.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/tools/testing/selftests/user_events/ftrace_test.c b/tools/testing/selftests/user_events/ftrace_test.c
index d33bd31425db..cf52789bafda 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 = ®.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));
+ ASSERT_EQ(ENOENT, errno);
+
/* Enable event */
self->enable_fd = open(enable_file, O_RDWR);
ASSERT_NE(-1, write(self->enable_fd, "1", sizeof("1")))
--
2.25.1