ntfs_ace
struct ntfs_ace *ace;
sizeof(struct ntfs_ace) + 4;
acl->size = cpu_to_le16(sizeof(struct ntfs_acl) + sizeof(struct ntfs_ace) + 4);
ace = (struct ntfs_ace *)((u8 *)acl + sizeof(struct ntfs_acl));
ace->size = cpu_to_le16(sizeof(struct ntfs_ace) + 4);