6  * PID namespace.
45 	pid_t pid = -1;  in call_clone3_set_tid()  local
54 	pid = sys_clone3(&args, sizeof(args));  in call_clone3_set_tid()
55 	if (pid < 0) {  in call_clone3_set_tid()
61 	if (pid == 0) {  in call_clone3_set_tid()
66 		ksft_print_msg("I am the child, my PID is %d (expected %d)\n",  in call_clone3_set_tid()
96 	if (expected_pid == 0 || expected_pid == pid) {  in call_clone3_set_tid()
97 		ksft_print_msg("I am the parent (%d). My child's pid is %d\n",  in call_clone3_set_tid()
98 			       getpid(), pid);  in call_clone3_set_tid()
101 			"Expected child pid %d does not match actual pid %d\n",  in call_clone3_set_tid()
102 			expected_pid, pid);  in call_clone3_set_tid()
106 	if (waitpid(pid, &status, 0) < 0) {  in call_clone3_set_tid()
154 	pid_t pid, ns1, ns2, ns3, ns_pid;  in main()  local
186 	 * nested PID namespace.  in main()
202 	 * nested PID namespace.  in main()
207 	/* Try with an invalid PID */  in main()
217 	/* Try it in a new PID namespace */  in main()
223 	/* Try with a valid PID (1) this should return -EEXIST. */  in main()
230 	/* Try it in a new PID namespace */  in main()
254 	/* Find the current active PID */  in main()
255 	pid = fork();  in main()
256 	if (pid == 0) {  in main()
257 		ksft_print_msg("Child has PID %d\n", getpid());  in main()
260 	if (waitpid(pid, &status, 0) < 0)  in main()
261 		ksft_exit_fail_msg("Waiting for child %d failed", pid);  in main()
263 	/* After the child has finished, its PID should be free. */  in main()
264 	set_tid[0] = pid;  in main()
267 	/* This should fail as there is no PID 1 in that namespace */  in main()
271 	 * Creating a process with PID 1 in the newly created most nested  in main()
272 	 * PID namespace and PID 'pid' in the parent PID namespace. This  in main()
276 	set_tid[1] = pid;  in main()
277 	test_clone3_set_tid(set_tid, 2, CLONE_NEWPID, 0, pid, 0);  in main()
279 	ksft_print_msg("unshare PID namespace\n");  in main()
284 	set_tid[0] = pid;  in main()
286 	/* This should fail as there is no PID 1 in that namespace */  in main()
289 	/* Let's create a PID 1 */  in main()
293 		 * This and the next test cases check that all pid-s are  in main()
301 		set_tid[1] = pid;  in main()
304 		ksft_print_msg("Child in PID namespace has PID %d\n", getpid());  in main()
310 		set_tid[2] = pid;  in main()
311 		/* This should fail as there is invalid PID at level '1'. */  in main()
316 		set_tid[2] = pid;  in main()
318 		 * This should fail as there are not enough active PID  in main()
320 		 * PID namespace. Not yet nested.  in main()
326 		 * something like 'NSpid:	pid	42	1'.  in main()
340 	snprintf(proc_path, sizeof(proc_path), "/proc/%d/status", pid);  in main()
383 	if (ns3 == pid && ns2 == 42 && ns1 == 1)  in main()