Add a selftest for PIDFD_INFO_EXIT behavior.
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
---
tools/testing/selftests/pidfd/pidfd_info_test.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/tools/testing/selftests/pidfd/pidfd_info_test.c b/tools/testing/selftests/pidfd/pidfd_info_test.c
index 2a5742a2a55f..2917e7a03b31 100644
--- a/tools/testing/selftests/pidfd/pidfd_info_test.c
+++ b/tools/testing/selftests/pidfd/pidfd_info_test.c
@@ -161,4 +161,20 @@ TEST_F(pidfd_info, sigkill_reaped)
ASSERT_EQ(WTERMSIG(info.exit_code), SIGKILL);
}
+TEST_F(pidfd_info, success_exit)
+{
+ struct pidfd_info info = {
+ .mask = PIDFD_INFO_CGROUPID,
+ };
+
+ /* Process has exited but not been reaped so this must work. */
+ ASSERT_EQ(ioctl(self->child_pidfd3, PIDFD_GET_INFO, &info), 0);
+
+ info.mask = PIDFD_INFO_CGROUPID | PIDFD_INFO_EXIT;
+ ASSERT_EQ(ioctl(self->child_pidfd3, PIDFD_GET_INFO, &info), 0);
+ ASSERT_TRUE(!!(info.mask & PIDFD_INFO_CREDS));
+ /* Process has exited but not been reaped, so no PIDFD_INFO_EXIT information yet. */
+ ASSERT_FALSE(!!(info.mask & PIDFD_INFO_EXIT));
+}
+
TEST_HARNESS_MAIN
--
2.47.2
