+ struct squashfs_xattr_id_table *id_table;
+
+ id_table = squashfs_read_table(sb, start, sizeof(*id_table));
+ if (IS_ERR(id_table))
+ return (__le64 *) id_table;
+
+ *xattr_table_start = le64_to_cpu(id_table->xattr_table_start);
+ *xattr_ids = le32_to_cpu(id_table->xattr_ids);
+ kfree(id_table);
+
+ /* Sanity check values */
+
+ /* there is always at least one xattr id */
+ if (*xattr_ids == 0)
+ return ERR_PTR(-EINVAL);
+
+ /* xattr_table should be less than start */
+ if (*xattr_table_start >= start)
+ return ERR_PTR(-EINVAL);