Unverified Commit 86c1dfdd authored by Christian Brauner's avatar Christian Brauner
Browse files

selftests/pidfd: add second 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-v3-11-c8c3d8361705@kernel.org


Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 853ab1ff

tools/testing/selftests/pidfd/pidfd_info_test.c

+18 −0
Original line number Diff line number Diff line
@@ -143,4 +143,22 @@ TEST_F(pidfd_info, sigkill_exit) 
	ASSERT_FALSE(!!(info.mask & PIDFD_INFO_EXIT));

}



TEST_F(pidfd_info, sigkill_reaped)

{

	struct pidfd_info info = {

		.mask = PIDFD_INFO_CGROUPID,

	};



	/* Process has already been reaped and PIDFD_INFO_EXIT hasn't been set. */

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

	ASSERT_EQ(errno, ESRCH);



	info.mask = PIDFD_INFO_CGROUPID | PIDFD_INFO_EXIT;

	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