cgroup_v1v2_get_from_fd
struct cgroup *cgroup_v1v2_get_from_fd(int fd);
cgroup = cgroup_v1v2_get_from_fd(fd);
cgroup = cgroup_v1v2_get_from_fd(fd);
cgroup = cgroup_v1v2_get_from_fd(fd);
cgrp = cgroup_v1v2_get_from_fd(fd);
struct cgroup *cgrp = cgroup_v1v2_get_from_fd(fd);