cgroup_on_dfl(cgrp) ? ss->name : ss->legacy_name,
cft->name);
else
- strncpy(buf, cft->name, CGROUP_FILE_NAME_MAX);
+ strlcpy(buf, cft->name, CGROUP_FILE_NAME_MAX);
return buf;
}
root->flags = opts->flags;
if (opts->release_agent)
- strcpy(root->release_agent_path, opts->release_agent);
+ strlcpy(root->release_agent_path, opts->release_agent, PATH_MAX);
if (opts->name)
- strcpy(root->name, opts->name);
+ strlcpy(root->name, opts->name, MAX_CGROUP_ROOT_NAMELEN);
if (opts->cpuset_clone_children)
set_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags);
}
if (cgroup_is_threaded(cgrp))
return 0;
+ /*
+ * If @cgroup is populated or has domain controllers enabled, it
+ * can't be switched. While the below cgroup_can_be_thread_root()
+ * test can catch the same conditions, that's only when @parent is
+ * not mixable, so let's check it explicitly.
+ */
+ if (cgroup_is_populated(cgrp) ||
+ cgrp->subtree_control & ~cgrp_dfl_threaded_ss_mask)
+ return -EOPNOTSUPP;
+
/* we're joining the parent's domain, ensure its validity */
if (!cgroup_is_valid_domain(dom_cgrp) ||
!cgroup_can_be_thread_root(dom_cgrp))
static void css_task_iter_advance(struct css_task_iter *it)
{
- struct list_head *l = it->task_pos;
+ struct list_head *next;
lockdep_assert_held(&css_set_lock);
- WARN_ON_ONCE(!l);
-
repeat:
/*
* Advance iterator to find next entry. cset->tasks is consumed
* first and then ->mg_tasks. After ->mg_tasks, we move onto the
* next cset.
*/
- l = l->next;
+ next = it->task_pos->next;
- if (l == it->tasks_head)
- l = it->mg_tasks_head->next;
+ if (next == it->tasks_head)
+ next = it->mg_tasks_head->next;
- if (l == it->mg_tasks_head)
+ if (next == it->mg_tasks_head)
css_task_iter_advance_css_set(it);
else
- it->task_pos = l;
+ it->task_pos = next;
/* if PROCS, skip over tasks which aren't group leaders */
if ((it->flags & CSS_TASK_ITER_PROCS) && it->task_pos &&
},
{
.name = "cgroup.threads",
+ .flags = CFTYPE_NS_DELEGATABLE,
.release = cgroup_procs_release,
.seq_start = cgroup_threads_start,
.seq_next = cgroup_procs_next,