148 	pid_t pid;  in test_pidfd_send_signal_exited_fail()  local
158 	pid = fork();  in test_pidfd_send_signal_exited_fail()
159 	if (pid < 0)  in test_pidfd_send_signal_exited_fail()
163 	if (pid == 0)  in test_pidfd_send_signal_exited_fail()
166 	snprintf(buf, sizeof(buf), "/proc/%d", pid);  in test_pidfd_send_signal_exited_fail()
170 	ret = wait_for_pid(pid);  in test_pidfd_send_signal_exited_fail()
208 	const char *test_name = "pidfd_send_signal signal recycled pid";  in test_pidfd_send_signal_recycled_pid_fail()
220 			ksft_test_result_skip("%s test: Unsharing pid namespace not permitted\n",  in test_pidfd_send_signal_recycled_pid_fail()
224 		ksft_exit_fail_msg("%s test: Failed to unshare pid namespace\n",  in test_pidfd_send_signal_recycled_pid_fail()
244 	/* pid 1 in new pid namespace */  in test_pidfd_send_signal_recycled_pid_fail()
260 		/* grab pid PID_RECYCLE */  in test_pidfd_send_signal_recycled_pid_fail()
271 				ksft_print_msg("pid to recycle is %d\n", pid2);  in test_pidfd_send_signal_recycled_pid_fail()
284 		 * able to grab pid PID_RECYCLE skip the test.  in test_pidfd_send_signal_recycled_pid_fail()
319 			 * recycled pid PID_RECYCLE.  in test_pidfd_send_signal_recycled_pid_fail()
330 			 * We have recycled the pid. Try to signal it. This  in test_pidfd_send_signal_recycled_pid_fail()
372 		/* failed to recycle pid */  in test_pidfd_send_signal_recycled_pid_fail()
380 			"%s test: Managed to signal recycled pid %d\n",  in test_pidfd_send_signal_recycled_pid_fail()
383 		ksft_exit_fail_msg("%s test: Failed to recycle pid %d\n",  in test_pidfd_send_signal_recycled_pid_fail()
391 			"%s test: Failed to signal recycled pid as expected\n",  in test_pidfd_send_signal_recycled_pid_fail()
436 	ksft_print_msg("Child Thread: starting. pid %d tid %ld ; and sleeping\n",  in test_pidfd_poll_exec_thread()
442 	ksft_print_msg("Child Thread: DONE. pid %d tid %ld\n",  in test_pidfd_poll_exec_thread()
482 	ksft_print_msg("Child (pidfd): starting. pid %d tid %ld\n", getpid(),  in child_poll_exec_test()
497 	int pid, pidfd = 0;  in test_pidfd_poll_exec()  local
502 	ksft_print_msg("Parent: pid: %d\n", getpid());  in test_pidfd_poll_exec()
503 	pid = pidfd_clone(CLONE_PIDFD, &pidfd, child_poll_exec_test);  in test_pidfd_poll_exec()
504 	if (pid < 0)  in test_pidfd_poll_exec()
506 				   test_name, pid, errno);  in test_pidfd_poll_exec()
508 	ksft_print_msg("Parent: Waiting for Child (%d) to complete.\n", pid);  in test_pidfd_poll_exec()
511 		ret = waitpid(pid, &status, 0);  in test_pidfd_poll_exec()
515 		if (ret == pid)  in test_pidfd_poll_exec()
535 	ksft_print_msg("Child Thread: starting. pid %d tid %ld ; and sleeping\n",  in test_pidfd_poll_leader_exit_thread()
538 	ksft_print_msg("Child Thread: DONE. pid %d tid %ld\n", getpid(), syscall(SYS_gettid));  in test_pidfd_poll_leader_exit_thread()
547 	ksft_print_msg("Child: starting. pid %d tid %ld\n", getpid(), syscall(SYS_gettid));  in child_poll_leader_exit_test()
563 	int pid, pidfd = 0;  in test_pidfd_poll_leader_exit()  local
575 	ksft_print_msg("Parent: pid: %d\n", getpid());  in test_pidfd_poll_leader_exit()
576 	pid = pidfd_clone(CLONE_PIDFD, &pidfd, child_poll_leader_exit_test);  in test_pidfd_poll_leader_exit()
577 	if (pid < 0)  in test_pidfd_poll_leader_exit()
579 				   test_name, pid, errno);  in test_pidfd_poll_leader_exit()
581 	ksft_print_msg("Parent: Waiting for Child (%d) to complete.\n", pid);  in test_pidfd_poll_leader_exit()
584 		ret = waitpid(pid, &status, 0);  in test_pidfd_poll_leader_exit()
597 	if (ret == pid)  in test_pidfd_poll_leader_exit()