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selftests/user_events: Add test cases when event is disabled

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When user_events are disabled, it's write operation should return -EBADF.
Add this test cases.

Link: https://lkml.kernel.org/r/20230626111344.19136-4-sunliming@kylinos.cn

Acked-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: sunliming <sunliming@kylinos.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
sunliming 2023-06-26 19:13:44 +08:00 committed by Steven Rostedt (Google)
parent c27b40cf91
commit d34a271acc
1 changed files with 4 additions and 0 deletions
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4
tools/testing/selftests/user_events/ftrace_test.c
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@ -324,6 +324,10 @@ 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")))