--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/com/sun/security/auth/module/UnixSystem.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2000-2006 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 com.sun.security.auth.module;
+
+import javax.security.auth.*;
+import javax.security.auth.login.*;
+
+/**
+ * <p> This class implementation retrieves and makes available Unix
+ * UID/GID/groups information for the current user.
+ *
+ */
+public class UnixSystem {
+
+    private native void getUnixInfo();
+
+    protected String username;
+    protected long uid;
+    protected long gid;
+    protected long[] groups;
+
+    /**
+     * Instantiate a <code>UnixSystem</code> and load
+     * the native library to access the underlying system information.
+     */
+    public UnixSystem() {
+        System.loadLibrary("jaas_unix");
+        getUnixInfo();
+    }
+
+    /**
+     * Get the username for the current Unix user.
+     *
+     * <p>
+     *
+     * @return the username for the current Unix user.
+     */
+    public String getUsername() {
+        return username;
+    }
+
+    /**
+     * Get the UID for the current Unix user.
+     *
+     * <p>
+     *
+     * @return the UID for the current Unix user.
+     */
+    public long getUid() {
+        return uid;
+    }
+
+    /**
+     * Get the GID for the current Unix user.
+     *
+     * <p>
+     *
+     * @return the GID for the current Unix user.
+     */
+    public long getGid() {
+        return gid;
+    }
+
+    /**
+     * Get the supplementary groups for the current Unix user.
+     *
+     * <p>
+     *
+     * @return the supplementary groups for the current Unix user.
+     */
+    public long[] getGroups() {
+        return groups;
+    }
+}