/*
* Copyright (c) 2007, 2009, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.nio.file.attribute;
import java.security.Principal;
/**
* A {@code Principal} representing an identity used to determine access rights
* to objects in a file system.
*
* <p> On many platforms and file systems an entity requires appropriate access
* rights or permissions in order to access objects in a file system. The
* access rights are generally performed by checking the identity of the entity.
* For example, on implementations that use Access Control Lists (ACLs) to
* enforce privilege separation then a file in the file system may have an
* associated ACL that determines the access rights of identities specified in
* the ACL.
*
* <p> A {@code UserPrincipal} object is an abstract representation of an
* identity. It has a {@link #getName() name} that is typically the username or
* account name that it represents. User principal objects may be obtained using
* a {@link UserPrincipalLookupService}, or returned by {@link
* FileAttributeView} implementations that provide access to identity related
* attributes. For example, the {@link AclFileAttributeView} and {@link
* PosixFileAttributeView} provide access to a file's {@link
* PosixFileAttributes#owner owner}.
*
* @since 1.7
*/
public interface UserPrincipal extends Principal { }