Unverified Commit a79975f0 authored by Christian Brauner's avatar Christian Brauner
Browse files

selftests/pidfd: add third PIDFD_INFO_EXIT selftest 

Add a selftest for PIDFD_INFO_EXIT behavior.

Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-12-c8c3d8361705@kernel.org


Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 86c1dfdd

tools/testing/selftests/pidfd/pidfd_info_test.c

+16 −0
Original line number Diff line number Diff line
@@ -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