1 files changed, 86 insertions, 0 deletions
diff --git a/test/zdtm/static/cgroupv2_00.c b/test/zdtm/static/cgroupv2_00.c
new file mode 100644
index 000000000..2c6780e0c
--- /dev/null
+++ b/test/zdtm/static/cgroupv2_00.c
@@ -0,0 +1,86 @@
+#include <sys/mount.h>
+#include <sys/stat.h>
+
+#include "zdtmtst.h"
+
+const char *test_doc = "Check that some cgroup-v2 properties in kernel controllers are preserved";
+const char *test_author = "Bui Quang Minh <minhquangbui99@gmail.com>";
+
+char *dirname;
+TEST_OPTION(dirname, string, "cgroup-v2 directory name", 1);
+const char *cgname = "subcg00";
+
+int main(int argc, char **argv)
+{
+	char path[1024], aux[1024];
+	int ret = -1;
+
+	test_init(argc, argv);
+
+	if (mkdir(dirname, 0700) < 0 && errno != EEXIST) {
+		pr_perror("Can't make dir");
+		return -1;
+	}
+
+	if (mount("cgroup2", dirname, "cgroup2", 0, NULL)) {
+		pr_perror("Can't mount cgroup-v2");
+		return -1;
+	}
+
+	sprintf(path, "%s/%s", dirname, cgname);
+	if (mkdir(path, 0700) < 0 && errno != EEXIST) {
+		pr_perror("Can't make dir");
+		goto out;
+	}
+
+	/* Make cpuset controllers available in children directory */
+	sprintf(path, "%s/%s", dirname, "cgroup.subtree_control");
+	sprintf(aux, "%s", "+cpuset");
+	if (write_value(path, aux))
+		goto out;
+
+	sprintf(path, "%s/%s/%s", dirname, cgname, "cgroup.subtree_control");
+	sprintf(aux, "%s", "+cpuset");
+	if (write_value(path, aux))
+		goto out;
+
+	sprintf(path, "%s/%s/%s", dirname, cgname, "cgroup.type");
+	sprintf(aux, "%s", "threaded");
+	if (write_value(path, aux))
+		goto out;
+
+	sprintf(path, "%s/%s/%s", dirname, cgname, "cgroup.procs");
+	sprintf(aux, "%d", getpid());
+	if (write_value(path, aux))
+		goto out;
+
+	test_daemon();
+	test_waitsig();
+
+	sprintf(path, "%s/%s/%s", dirname, cgname, "cgroup.subtree_control");
+	if (read_value(path, aux, sizeof(aux)))
+		goto out;
+
+	if (strcmp(aux, "cpuset\n")) {
+		fail("cgroup.subtree_control mismatches");
+		goto out;
+	}
+
+	sprintf(path, "%s/%s/%s", dirname, cgname, "cgroup.type");
+	if (read_value(path, aux, sizeof(aux)))
+		goto out;
+
+	if (strcmp(aux, "threaded\n")) {
+		fail("cgroup.type mismatches");
+		goto out;
+	}
+
+	pass();
+
+	ret = 0;
+
+out:
+	sprintf(path, "%s", dirname);
+	umount(path);
+	return ret;
+}