Unverified Commit 2adf6ca6 authored by Christian Brauner's avatar Christian Brauner
Browse files

selftests/pidfd: add fifth 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-v3-14-c8c3d8361705@kernel.org


Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 2e94e4c6

tools/testing/selftests/pidfd/pidfd_info_test.c

+23 −0
Original line number Diff line number Diff line
@@ -195,4 +195,27 @@ TEST_F(pidfd_info, success_reaped) 
	ASSERT_EQ(WEXITSTATUS(info.exit_code), 0);

}



TEST_F(pidfd_info, success_reaped_poll)

{

	struct pidfd_info info = {

		.mask = PIDFD_INFO_CGROUPID | PIDFD_INFO_EXIT,

	};

	struct pollfd fds = {};

	int nevents;



	fds.events = POLLIN;

	fds.fd = self->child_pidfd2;



	nevents = poll(&fds, 1, -1);

	ASSERT_EQ(nevents, 1);

	ASSERT_TRUE(!!(fds.revents & POLLIN));

	ASSERT_TRUE(!!(fds.revents & POLLHUP));



	ASSERT_EQ(ioctl(self->child_pidfd2, PIDFD_GET_INFO, &info), 0);

	ASSERT_FALSE(!!(info.mask & PIDFD_INFO_CREDS));

	ASSERT_TRUE(!!(info.mask & PIDFD_INFO_EXIT));

	ASSERT_TRUE(WIFSIGNALED(info.exit_code));

	ASSERT_EQ(WTERMSIG(info.exit_code), SIGKILL);

}



TEST_HARNESS_MAIN