29 static int cg_check_frozen(const char *cgroup, bool frozen)  in cg_check_frozen()  argument
32 		if (cg_read_strstr(cgroup, "cgroup.events", "frozen 1") != 0) {  in cg_check_frozen()
33 			debug("Cgroup %s isn't frozen\n", cgroup);  in cg_check_frozen()
40 		if (cg_read_strstr(cgroup, "cgroup.events", "frozen 0") != 0) {  in cg_check_frozen()
41 			debug("Cgroup %s is frozen\n", cgroup);  in cg_check_frozen()
52 static int cg_freeze_nowait(const char *cgroup, bool freeze)  in cg_freeze_nowait()  argument
54 	return cg_write(cgroup, "cgroup.freeze", freeze ? "1" : "0");  in cg_freeze_nowait()
60 static int cg_prepare_for_wait(const char *cgroup)  in cg_prepare_for_wait()  argument
70 	ret = inotify_add_watch(fd, cg_control(cgroup, "cgroup.events"),  in cg_prepare_for_wait()
115 static int cg_enter_and_wait_for_frozen(const char *cgroup, int pid,  in cg_enter_and_wait_for_frozen()  argument
121 	fd = cg_prepare_for_wait(cgroup);  in cg_enter_and_wait_for_frozen()
125 	ret = cg_enter(cgroup, pid);  in cg_enter_and_wait_for_frozen()
134 		ret = cg_check_frozen(cgroup, frozen);  in cg_enter_and_wait_for_frozen()
149 static int cg_freeze_wait(const char *cgroup, bool freeze)  in cg_freeze_wait()  argument
153 	fd = cg_prepare_for_wait(cgroup);  in cg_freeze_wait()
157 	ret = cg_freeze_nowait(cgroup, freeze);  in cg_freeze_wait()
167 	ret = cg_check_frozen(cgroup, freeze);  in cg_freeze_wait()
177 static int child_fn(const char *cgroup, void *arg)  in child_fn()  argument
195 	char *cgroup = NULL;  in test_cgfreezer_simple()  local
198 	cgroup = cg_name(root, "cg_test_simple");  in test_cgfreezer_simple()
199 	if (!cgroup)  in test_cgfreezer_simple()
202 	if (cg_create(cgroup))  in test_cgfreezer_simple()
206 		cg_run_nowait(cgroup, child_fn, NULL);  in test_cgfreezer_simple()
208 	if (cg_wait_for_proc_count(cgroup, 100))  in test_cgfreezer_simple()
211 	if (cg_check_frozen(cgroup, false))  in test_cgfreezer_simple()
214 	if (cg_freeze_wait(cgroup, true))  in test_cgfreezer_simple()
217 	if (cg_freeze_wait(cgroup, false))  in test_cgfreezer_simple()
223 	if (cgroup)  in test_cgfreezer_simple()
224 		cg_destroy(cgroup);  in test_cgfreezer_simple()
225 	free(cgroup);  in test_cgfreezer_simple()
246 	char *cgroup[10] = {0};  in test_cgfreezer_tree()  local
250 	cgroup[0] = cg_name(root, "cg_test_tree_A");  in test_cgfreezer_tree()
251 	if (!cgroup[0])  in test_cgfreezer_tree()
254 	cgroup[1] = cg_name(cgroup[0], "B");  in test_cgfreezer_tree()
255 	if (!cgroup[1])  in test_cgfreezer_tree()
258 	cgroup[2] = cg_name(cgroup[1], "C");  in test_cgfreezer_tree()
259 	if (!cgroup[2])  in test_cgfreezer_tree()
262 	cgroup[3] = cg_name(cgroup[1], "D");  in test_cgfreezer_tree()
263 	if (!cgroup[3])  in test_cgfreezer_tree()
266 	cgroup[4] = cg_name(cgroup[0], "E");  in test_cgfreezer_tree()
267 	if (!cgroup[4])  in test_cgfreezer_tree()
270 	cgroup[5] = cg_name(cgroup[4], "F");  in test_cgfreezer_tree()
271 	if (!cgroup[5])  in test_cgfreezer_tree()
274 	cgroup[6] = cg_name(cgroup[5], "G");  in test_cgfreezer_tree()
275 	if (!cgroup[6])  in test_cgfreezer_tree()
278 	cgroup[7] = cg_name(cgroup[6], "H");  in test_cgfreezer_tree()
279 	if (!cgroup[7])  in test_cgfreezer_tree()
282 	cgroup[8] = cg_name(cgroup[0], "I");  in test_cgfreezer_tree()
283 	if (!cgroup[8])  in test_cgfreezer_tree()
286 	cgroup[9] = cg_name(cgroup[0], "K");  in test_cgfreezer_tree()
287 	if (!cgroup[9])  in test_cgfreezer_tree()
291 		if (cg_create(cgroup[i]))  in test_cgfreezer_tree()
294 	cg_run_nowait(cgroup[2], child_fn, NULL);  in test_cgfreezer_tree()
295 	cg_run_nowait(cgroup[7], child_fn, NULL);  in test_cgfreezer_tree()
296 	cg_run_nowait(cgroup[9], child_fn, NULL);  in test_cgfreezer_tree()
297 	cg_run_nowait(cgroup[9], child_fn, NULL);  in test_cgfreezer_tree()
298 	cg_run_nowait(cgroup[9], child_fn, NULL);  in test_cgfreezer_tree()
305 	if (cg_wait_for_proc_count(cgroup[2], 1) ||  in test_cgfreezer_tree()
306 	    cg_wait_for_proc_count(cgroup[7], 1) ||  in test_cgfreezer_tree()
307 	    cg_wait_for_proc_count(cgroup[9], 3))  in test_cgfreezer_tree()
313 	if (cg_freeze_wait(cgroup[1], true))  in test_cgfreezer_tree()
319 	if (cg_freeze_wait(cgroup[5], true))  in test_cgfreezer_tree()
325 	if (cg_freeze_wait(cgroup[6], true))  in test_cgfreezer_tree()
331 	if (cg_check_frozen(cgroup[0], false))  in test_cgfreezer_tree()
334 	if (cg_check_frozen(cgroup[4], false))  in test_cgfreezer_tree()
340 	if (cg_freeze_wait(cgroup[0], true))  in test_cgfreezer_tree()
343 	if (cg_check_frozen(cgroup[1], true))  in test_cgfreezer_tree()
346 	if (cg_check_frozen(cgroup[4], true))  in test_cgfreezer_tree()
352 	if (cg_freeze_nowait(cgroup[1], false))  in test_cgfreezer_tree()
355 	if (cg_freeze_nowait(cgroup[5], false))  in test_cgfreezer_tree()
358 	if (cg_freeze_nowait(cgroup[6], false))  in test_cgfreezer_tree()
364 	if (cg_check_frozen(cgroup[2], true))  in test_cgfreezer_tree()
367 	if (cg_check_frozen(cgroup[7], true))  in test_cgfreezer_tree()
373 	if (cg_freeze_wait(cgroup[0], false))  in test_cgfreezer_tree()
376 	if (cg_check_frozen(cgroup[2], false))  in test_cgfreezer_tree()
379 	if (cg_check_frozen(cgroup[9], false))  in test_cgfreezer_tree()
385 	for (i = 9; i >= 0 && cgroup[i]; i--) {  in test_cgfreezer_tree()
386 		cg_destroy(cgroup[i]);  in test_cgfreezer_tree()
387 		free(cgroup[i]);  in test_cgfreezer_tree()
396 static int forkbomb_fn(const char *cgroup, void *arg)  in forkbomb_fn()  argument
419 	char *cgroup = NULL;  in test_cgfreezer_forkbomb()  local
421 	cgroup = cg_name(root, "cg_forkbomb_test");  in test_cgfreezer_forkbomb()
422 	if (!cgroup)  in test_cgfreezer_forkbomb()
425 	if (cg_create(cgroup))  in test_cgfreezer_forkbomb()
428 	cg_run_nowait(cgroup, forkbomb_fn, NULL);  in test_cgfreezer_forkbomb()
432 	if (cg_freeze_wait(cgroup, true))  in test_cgfreezer_forkbomb()
435 	if (cg_killall(cgroup))  in test_cgfreezer_forkbomb()
438 	if (cg_wait_for_proc_count(cgroup, 0))  in test_cgfreezer_forkbomb()
444 	if (cgroup)  in test_cgfreezer_forkbomb()
445 		cg_destroy(cgroup);  in test_cgfreezer_forkbomb()
446 	free(cgroup);  in test_cgfreezer_forkbomb()
567 	char *cgroup[2] = {0};  in test_cgfreezer_migrate()  local
570 	cgroup[0] = cg_name(root, "cg_test_migrate_A");  in test_cgfreezer_migrate()
571 	if (!cgroup[0])  in test_cgfreezer_migrate()
574 	cgroup[1] = cg_name(root, "cg_test_migrate_B");  in test_cgfreezer_migrate()
575 	if (!cgroup[1])  in test_cgfreezer_migrate()
578 	if (cg_create(cgroup[0]))  in test_cgfreezer_migrate()
581 	if (cg_create(cgroup[1]))  in test_cgfreezer_migrate()
584 	pid = cg_run_nowait(cgroup[0], child_fn, NULL);  in test_cgfreezer_migrate()
588 	if (cg_wait_for_proc_count(cgroup[0], 1))  in test_cgfreezer_migrate()
594 	if (cg_freeze_wait(cgroup[1], true))  in test_cgfreezer_migrate()
597 	if (cg_enter_and_wait_for_frozen(cgroup[1], pid, true))  in test_cgfreezer_migrate()
600 	if (cg_check_frozen(cgroup[0], false))  in test_cgfreezer_migrate()
606 	if (cg_enter_and_wait_for_frozen(cgroup[0], pid, false))  in test_cgfreezer_migrate()
609 	if (cg_check_frozen(cgroup[1], true))  in test_cgfreezer_migrate()
615 	if (cg_freeze_wait(cgroup[0], true))  in test_cgfreezer_migrate()
618 	if (cg_enter_and_wait_for_frozen(cgroup[1], pid, true))  in test_cgfreezer_migrate()
621 	if (cg_check_frozen(cgroup[0], true))  in test_cgfreezer_migrate()
627 	if (cgroup[0])  in test_cgfreezer_migrate()
628 		cg_destroy(cgroup[0]);  in test_cgfreezer_migrate()
629 	free(cgroup[0]);  in test_cgfreezer_migrate()
630 	if (cgroup[1])  in test_cgfreezer_migrate()
631 		cg_destroy(cgroup[1]);  in test_cgfreezer_migrate()
632 	free(cgroup[1]);  in test_cgfreezer_migrate()
642 	char *cgroup = NULL;  in test_cgfreezer_ptrace()  local
646 	cgroup = cg_name(root, "cg_test_ptrace");  in test_cgfreezer_ptrace()
647 	if (!cgroup)  in test_cgfreezer_ptrace()
650 	if (cg_create(cgroup))  in test_cgfreezer_ptrace()
653 	pid = cg_run_nowait(cgroup, child_fn, NULL);  in test_cgfreezer_ptrace()
657 	if (cg_wait_for_proc_count(cgroup, 1))  in test_cgfreezer_ptrace()
660 	if (cg_freeze_wait(cgroup, true))  in test_cgfreezer_ptrace()
675 	if (cg_check_frozen(cgroup, true))  in test_cgfreezer_ptrace()
684 	if (cg_check_frozen(cgroup, true))  in test_cgfreezer_ptrace()
690 	if (cgroup)  in test_cgfreezer_ptrace()
691 		cg_destroy(cgroup);  in test_cgfreezer_ptrace()
692 	free(cgroup);  in test_cgfreezer_ptrace()
724 	char *cgroup = NULL;  in test_cgfreezer_stopped()  local
726 	cgroup = cg_name(root, "cg_test_stopped");  in test_cgfreezer_stopped()
727 	if (!cgroup)  in test_cgfreezer_stopped()
730 	if (cg_create(cgroup))  in test_cgfreezer_stopped()
733 	pid = cg_run_nowait(cgroup, child_fn, NULL);  in test_cgfreezer_stopped()
735 	if (cg_wait_for_proc_count(cgroup, 1))  in test_cgfreezer_stopped()
741 	if (cg_check_frozen(cgroup, false))  in test_cgfreezer_stopped()
744 	if (cg_freeze_wait(cgroup, true))  in test_cgfreezer_stopped()
747 	if (cg_freeze_wait(cgroup, false))  in test_cgfreezer_stopped()
756 	if (cgroup)  in test_cgfreezer_stopped()
757 		cg_destroy(cgroup);  in test_cgfreezer_stopped()
758 	free(cgroup);  in test_cgfreezer_stopped()
768 	char *cgroup = NULL;  in test_cgfreezer_ptraced()  local
771 	cgroup = cg_name(root, "cg_test_ptraced");  in test_cgfreezer_ptraced()
772 	if (!cgroup)  in test_cgfreezer_ptraced()
775 	if (cg_create(cgroup))  in test_cgfreezer_ptraced()
778 	pid = cg_run_nowait(cgroup, child_fn, NULL);  in test_cgfreezer_ptraced()
780 	if (cg_wait_for_proc_count(cgroup, 1))  in test_cgfreezer_ptraced()
791 	if (cg_check_frozen(cgroup, false))  in test_cgfreezer_ptraced()
794 	if (cg_freeze_wait(cgroup, true))  in test_cgfreezer_ptraced()
801 	if (cg_freeze_wait(cgroup, false))  in test_cgfreezer_ptraced()
813 	if (cgroup)  in test_cgfreezer_ptraced()
814 		cg_destroy(cgroup);  in test_cgfreezer_ptraced()
815 	free(cgroup);  in test_cgfreezer_ptraced()
819 static int vfork_fn(const char *cgroup, void *arg)  in vfork_fn()  argument
837 	char *cgroup = NULL;  in test_cgfreezer_vfork()  local
839 	cgroup = cg_name(root, "cg_test_vfork");  in test_cgfreezer_vfork()
840 	if (!cgroup)  in test_cgfreezer_vfork()
843 	if (cg_create(cgroup))  in test_cgfreezer_vfork()
846 	cg_run_nowait(cgroup, vfork_fn, NULL);  in test_cgfreezer_vfork()
848 	if (cg_wait_for_proc_count(cgroup, 2))  in test_cgfreezer_vfork()
851 	if (cg_freeze_wait(cgroup, true))  in test_cgfreezer_vfork()
857 	if (cgroup)  in test_cgfreezer_vfork()
858 		cg_destroy(cgroup);  in test_cgfreezer_vfork()
859 	free(cgroup);  in test_cgfreezer_vfork()