--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/nio/file/attribute/UserPrincipal.java	Sun Feb 15 12:25:54 2009 +0000
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2007-2009 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.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 { }