1 /* SPDX-License-Identifier: GPL-2.0 */
34 			return -1;  in cg_check_frozen()
42 			return -1;  in cg_check_frozen()
62 	int fd, ret = -1;  in cg_prepare_for_wait()
65 	if (fd == -1) {  in cg_prepare_for_wait()
72 	if (ret == -1) {  in cg_prepare_for_wait()
75 		fd = -1;  in cg_prepare_for_wait()
87 	int ret = -1;  in cg_wait_for()
96 		if (ret == -1) {  in cg_wait_for()
119 	int fd, ret = -1;  in cg_enter_and_wait_for_frozen()
152 	int fd, ret = -1;  in cg_freeze_wait()
176  * re-parented.
302 	 * Wait until all child processes will enter  in test_cgfreezer_tree()
386 	for (i = 9; i >= 0 && cgroup[i]; i--) {  in test_cgfreezer_tree()
452  * The test creates a cgroups and freezes it. Then it creates a child cgroup
453  * and populates it with a task. After that it checks that the child cgroup
454  * is frozen and the parent cgroup remains frozen too.
459 	char *parent, *child = NULL;  in test_cgfreezer_mkdir()  local
462 	parent = cg_name(root, "cg_test_mkdir_A");  in test_cgfreezer_mkdir()
463 	if (!parent)  in test_cgfreezer_mkdir()
466 	child = cg_name(parent, "cg_test_mkdir_B");  in test_cgfreezer_mkdir()
467 	if (!child)  in test_cgfreezer_mkdir()
470 	if (cg_create(parent))  in test_cgfreezer_mkdir()
473 	if (cg_freeze_wait(parent, true))  in test_cgfreezer_mkdir()
476 	if (cg_create(child))  in test_cgfreezer_mkdir()
479 	pid = cg_run_nowait(child, child_fn, NULL);  in test_cgfreezer_mkdir()
483 	if (cg_wait_for_proc_count(child, 1))  in test_cgfreezer_mkdir()
486 	if (cg_check_frozen(child, true))  in test_cgfreezer_mkdir()
489 	if (cg_check_frozen(parent, true))  in test_cgfreezer_mkdir()
495 	if (child)  in test_cgfreezer_mkdir()
496 		cg_destroy(child);  in test_cgfreezer_mkdir()
497 	free(child);  in test_cgfreezer_mkdir()
498 	if (parent)  in test_cgfreezer_mkdir()
499 		cg_destroy(parent);  in test_cgfreezer_mkdir()
500 	free(parent);  in test_cgfreezer_mkdir()
505  * The test creates two nested cgroups, freezes the parent
506  * and removes the child. Then it checks that the parent cgroup
507  * remains frozen and it's possible to create a new child
508  * without unfreezing. The new child is frozen too.
513 	char *parent, *child = NULL;  in test_cgfreezer_rmdir()  local
515 	parent = cg_name(root, "cg_test_rmdir_A");  in test_cgfreezer_rmdir()
516 	if (!parent)  in test_cgfreezer_rmdir()
519 	child = cg_name(parent, "cg_test_rmdir_B");  in test_cgfreezer_rmdir()
520 	if (!child)  in test_cgfreezer_rmdir()
523 	if (cg_create(parent))  in test_cgfreezer_rmdir()
526 	if (cg_create(child))  in test_cgfreezer_rmdir()
529 	if (cg_freeze_wait(parent, true))  in test_cgfreezer_rmdir()
532 	if (cg_destroy(child))  in test_cgfreezer_rmdir()
535 	if (cg_check_frozen(parent, true))  in test_cgfreezer_rmdir()
538 	if (cg_create(child))  in test_cgfreezer_rmdir()
541 	if (cg_check_frozen(child, true))  in test_cgfreezer_rmdir()
547 	if (child)  in test_cgfreezer_rmdir()
548 		cg_destroy(child);  in test_cgfreezer_rmdir()
549 	free(child);  in test_cgfreezer_rmdir()
550 	if (parent)  in test_cgfreezer_rmdir()
551 		cg_destroy(parent);  in test_cgfreezer_rmdir()
552 	free(parent);  in test_cgfreezer_rmdir()
559  * 1) A (running) -> B (frozen)
560  * 2) B (frozen) -> A (running)
561  * 3) A (frozen) -> B (frozen)
706 	if (len == -1) {  in proc_check_stopped()
708 		return -1;  in proc_check_stopped()
713 		return -1;  in proc_check_stopped()
833  * which called vfork() and is waiting for a child.