1 /* SPDX-License-Identifier: GPL-2.0 */
32 			return -1;  in cg_check_frozen()
40 			return -1;  in cg_check_frozen()
62 	int fd, ret = -1;  in cg_enter_and_wait_for_frozen()
95 	int fd, ret = -1;  in cg_freeze_wait()
119  * re-parented.
245 	 * Wait until all child processes will enter  in test_cgfreezer_tree()
329 	for (i = 9; i >= 0 && cgroup[i]; i--) {  in test_cgfreezer_tree()
395  * The test creates a cgroups and freezes it. Then it creates a child cgroup
396  * and populates it with a task. After that it checks that the child cgroup
397  * is frozen and the parent cgroup remains frozen too.
402 	char *parent, *child = NULL;  in test_cgfreezer_mkdir()  local
405 	parent = cg_name(root, "cg_test_mkdir_A");  in test_cgfreezer_mkdir()
406 	if (!parent)  in test_cgfreezer_mkdir()
409 	child = cg_name(parent, "cg_test_mkdir_B");  in test_cgfreezer_mkdir()
410 	if (!child)  in test_cgfreezer_mkdir()
413 	if (cg_create(parent))  in test_cgfreezer_mkdir()
416 	if (cg_freeze_wait(parent, true))  in test_cgfreezer_mkdir()
419 	if (cg_create(child))  in test_cgfreezer_mkdir()
422 	pid = cg_run_nowait(child, child_fn, NULL);  in test_cgfreezer_mkdir()
426 	if (cg_wait_for_proc_count(child, 1))  in test_cgfreezer_mkdir()
429 	if (cg_check_frozen(child, true))  in test_cgfreezer_mkdir()
432 	if (cg_check_frozen(parent, true))  in test_cgfreezer_mkdir()
438 	if (child)  in test_cgfreezer_mkdir()
439 		cg_destroy(child);  in test_cgfreezer_mkdir()
440 	free(child);  in test_cgfreezer_mkdir()
441 	if (parent)  in test_cgfreezer_mkdir()
442 		cg_destroy(parent);  in test_cgfreezer_mkdir()
443 	free(parent);  in test_cgfreezer_mkdir()
448  * The test creates two nested cgroups, freezes the parent
449  * and removes the child. Then it checks that the parent cgroup
450  * remains frozen and it's possible to create a new child
451  * without unfreezing. The new child is frozen too.
456 	char *parent, *child = NULL;  in test_cgfreezer_rmdir()  local
458 	parent = cg_name(root, "cg_test_rmdir_A");  in test_cgfreezer_rmdir()
459 	if (!parent)  in test_cgfreezer_rmdir()
462 	child = cg_name(parent, "cg_test_rmdir_B");  in test_cgfreezer_rmdir()
463 	if (!child)  in test_cgfreezer_rmdir()
466 	if (cg_create(parent))  in test_cgfreezer_rmdir()
469 	if (cg_create(child))  in test_cgfreezer_rmdir()
472 	if (cg_freeze_wait(parent, true))  in test_cgfreezer_rmdir()
475 	if (cg_destroy(child))  in test_cgfreezer_rmdir()
478 	if (cg_check_frozen(parent, true))  in test_cgfreezer_rmdir()
481 	if (cg_create(child))  in test_cgfreezer_rmdir()
484 	if (cg_check_frozen(child, true))  in test_cgfreezer_rmdir()
490 	if (child)  in test_cgfreezer_rmdir()
491 		cg_destroy(child);  in test_cgfreezer_rmdir()
492 	free(child);  in test_cgfreezer_rmdir()
493 	if (parent)  in test_cgfreezer_rmdir()
494 		cg_destroy(parent);  in test_cgfreezer_rmdir()
495 	free(parent);  in test_cgfreezer_rmdir()
502  * 1) A (running) -> B (frozen)
503  * 2) B (frozen) -> A (running)
504  * 3) A (frozen) -> B (frozen)
649 	if (len == -1) {  in proc_check_stopped()
651 		return -1;  in proc_check_stopped()
656 		return -1;  in proc_check_stopped()
776  * which called vfork() and is waiting for a child.