6  * PID namespace.
47 	pid_t pid = -1;  in call_clone3_set_tid()  local
56 	pid = sys_clone3(&args, sizeof(args));  in call_clone3_set_tid()
57 	if (pid < 0) {  in call_clone3_set_tid()
63 	if (pid == 0) {  in call_clone3_set_tid()
68 		ksft_print_msg("I am the child, my PID is %d (expected %d)\n",  in call_clone3_set_tid()
98 	if (expected_pid == 0 || expected_pid == pid) {  in call_clone3_set_tid()
99 		ksft_print_msg("I am the parent (%d). My child's pid is %d\n",  in call_clone3_set_tid()
100 			       getpid(), pid);  in call_clone3_set_tid()
103 			"Expected child pid %d does not match actual pid %d\n",  in call_clone3_set_tid()
104 			expected_pid, pid);  in call_clone3_set_tid()
108 	if (waitpid(pid, &status, 0) < 0) {  in call_clone3_set_tid()
156 	pid_t pid, ns1, ns2, ns3, ns_pid;  in main()  local
188 	 * nested PID namespace.  in main()
204 	 * nested PID namespace.  in main()
209 	/* Try with an invalid PID */  in main()
219 	/* Try it in a new PID namespace */  in main()
225 	/* Try with a valid PID (1) this should return -EEXIST. */  in main()
232 	/* Try it in a new PID namespace */  in main()
256 	/* Find the current active PID */  in main()
257 	pid = fork();  in main()
258 	if (pid == 0) {  in main()
259 		ksft_print_msg("Child has PID %d\n", getpid());  in main()
262 	if (waitpid(pid, &status, 0) < 0)  in main()
263 		ksft_exit_fail_msg("Waiting for child %d failed", pid);  in main()
265 	/* After the child has finished, its PID should be free. */  in main()
266 	set_tid[0] = pid;  in main()
269 	/* This should fail as there is no PID 1 in that namespace */  in main()
273 	 * Creating a process with PID 1 in the newly created most nested  in main()
274 	 * PID namespace and PID 'pid' in the parent PID namespace. This  in main()
278 	set_tid[1] = pid;  in main()
279 	test_clone3_set_tid(set_tid, 2, CLONE_NEWPID, 0, pid, 0);  in main()
281 	ksft_print_msg("unshare PID namespace\n");  in main()
286 	set_tid[0] = pid;  in main()
288 	/* This should fail as there is no PID 1 in that namespace */  in main()
291 	/* Let's create a PID 1 */  in main()
295 		 * This and the next test cases check that all pid-s are  in main()
303 		set_tid[1] = pid;  in main()
306 		ksft_print_msg("Child in PID namespace has PID %d\n", getpid());  in main()
312 		set_tid[2] = pid;  in main()
313 		/* This should fail as there is invalid PID at level '1'. */  in main()
318 		set_tid[2] = pid;  in main()
320 		 * This should fail as there are not enough active PID  in main()
322 		 * PID namespace. Not yet nested.  in main()
328 		 * something like 'NSpid:	pid	42	1'.  in main()
342 	snprintf(proc_path, sizeof(proc_path), "/proc/%d/status", pid);  in main()
385 	if (ns3 == pid && ns2 == 42 && ns1 == 1)  in main()