+int for_each_admissible_user(int (*func)(struct user_info *, void *),
+ void *data)
+{
+ struct user_info *ui = uid_hash_table;
+
+ if (!ui)
+ return -ERRNO_TO_ERROR(EFAULT);
+
+ for (; ui < uid_hash_table + uid_hash_table_size; ui++) {
+ int ret;
+
+ if (!ui_used(ui) || !ui_admissible(ui))
+ continue;
+ ret = func(ui, data);
+ if (ret < 0)
+ return ret;
+ }
+ return 1;
+}
+