+static struct aa_profile *__list_lookup_parent(struct list_head *lh,
+ struct aa_profile *profile)
+{
+ const char *base = hname_tail(profile->base.hname);
+ long len = base - profile->base.hname;
+ struct aa_load_ent *ent;
+
+ /* parent won't have trailing // so remove from len */
+ if (len <= 2)
+ return NULL;
+ len -= 2;
+
+ list_for_each_entry(ent, lh, list) {
+ if (ent->new == profile)
+ continue;
+ if (strncmp(ent->new->base.hname, profile->base.hname, len) ==
+ 0 && ent->new->base.hname[len] == 0)
+ return ent->new;
+ }
+
+ return NULL;
+}
+
+/**
+ * __replace_profile - replace @old with @new on a list
+ * @old: profile to be replaced (NOT NULL)
+ * @new: profile to replace @old with (NOT NULL)
+ * @share_replacedby: transfer @old->replacedby to @new
+ *
+ * Will duplicate and refcount elements that @new inherits from @old
+ * and will inherit @old children.
+ *
+ * refcount @new for list, put @old list refcount
+ *
+ * Requires: namespace list lock be held, or list not be shared
+ */
+static void __replace_profile(struct aa_profile *old, struct aa_profile *new,
+ bool share_replacedby)
+{
+ struct aa_profile *child, *tmp;
+
+ if (!list_empty(&old->base.profiles)) {
+ LIST_HEAD(lh);
+ list_splice_init_rcu(&old->base.profiles, &lh, synchronize_rcu);
+
+ list_for_each_entry_safe(child, tmp, &lh, base.list) {
+ struct aa_profile *p;
+
+ list_del_init(&child->base.list);
+ p = __find_child(&new->base.profiles, child->base.name);
+ if (p) {
+ /* @p replaces @child */
+ __replace_profile(child, p, share_replacedby);
+ continue;
+ }
+
+ /* inherit @child and its children */
+ /* TODO: update hname of inherited children */
+ /* list refcount transferred to @new */
+ p = aa_deref_parent(child);
+ rcu_assign_pointer(child->parent, aa_get_profile(new));
+ list_add_rcu(&child->base.list, &new->base.profiles);
+ aa_put_profile(p);
+ }
+ }
+
+ if (!rcu_access_pointer(new->parent)) {
+ struct aa_profile *parent = aa_deref_parent(old);
+ rcu_assign_pointer(new->parent, aa_get_profile(parent));
+ }
+ __aa_update_replacedby(old, new);
+ if (share_replacedby) {
+ aa_put_replacedby(new->replacedby);
+ new->replacedby = aa_get_replacedby(old->replacedby);
+ } else if (!rcu_access_pointer(new->replacedby->profile))
+ /* aafs interface uses replacedby */
+ rcu_assign_pointer(new->replacedby->profile,
+ aa_get_profile(new));
+ __aa_fs_profile_migrate_dents(old, new);
+
+ if (list_empty(&new->base.list)) {
+ /* new is not on a list already */
+ list_replace_rcu(&old->base.list, &new->base.list);
+ aa_get_profile(new);
+ aa_put_profile(old);
+ } else
+ __list_remove_profile(old);
+}
+
+/**
+ * __lookup_replace - lookup replacement information for a profile
+ * @ns - namespace the lookup occurs in
+ * @hname - name of profile to lookup
+ * @noreplace - true if not replacing an existing profile
+ * @p - Returns: profile to be replaced
+ * @info - Returns: info string on why lookup failed
+ *
+ * Returns: profile to replace (no ref) on success else ptr error
+ */
+static int __lookup_replace(struct aa_namespace *ns, const char *hname,
+ bool noreplace, struct aa_profile **p,
+ const char **info)
+{
+ *p = aa_get_profile(__lookup_profile(&ns->base, hname));
+ if (*p) {
+ int error = replacement_allowed(*p, noreplace, info);
+ if (error) {
+ *info = "profile can not be replaced";
+ return error;
+ }
+ }
+
+ return 0;
+}
+