/*

 * Copyright (c) 2008, 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 sun.nio.fs;

import java.security.AccessController;

import java.security.PrivilegedAction;

/**

 * Linux specific system calls.

 */

class LinuxNativeDispatcher extends UnixNativeDispatcher {

    private LinuxNativeDispatcher() { }

   /**

    * FILE *setmntent(const char *filename, const char *type);

    */

    static long setmntent(byte[] filename, byte[] type) throws UnixException {

        NativeBuffer pathBuffer = NativeBuffers.asNativeBuffer(filename);

        NativeBuffer typeBuffer = NativeBuffers.asNativeBuffer(type);

        try {

            return setmntent0(pathBuffer.address(), typeBuffer.address());

        } finally {

            typeBuffer.release();

            pathBuffer.release();

        }

    }

    private static native long setmntent0(long pathAddress, long typeAddress)

        throws UnixException;

    static native void endmntent(long stream) throws UnixException;

    /**

     * ssize_t fgetxattr(int filedes, const char *name, void *value, size_t size);

     */

    static int fgetxattr(int filedes, byte[] name, long valueAddress,

                         int valueLen) throws UnixException

    {

        NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);

        try {

            return fgetxattr0(filedes, buffer.address(), valueAddress, valueLen);

        } finally {

            buffer.release();

        }

    }

    private static native int fgetxattr0(int filedes, long nameAddress,

        long valueAdddress, int valueLen) throws UnixException;

    /**

     *  fsetxattr(int filedes, const char *name, const void *value, size_t size, int flags);

     */

    static void fsetxattr(int filedes, byte[] name, long valueAddress,

        int valueLen) throws UnixException

    {

        NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);

        try {

            fsetxattr0(filedes, buffer.address(), valueAddress, valueLen);

        } finally {

            buffer.release();

        }

    }

    private static native void fsetxattr0(int filedes, long nameAddress,

        long valueAdddress, int valueLen) throws UnixException;

    /**

     * fremovexattr(int filedes, const char *name);

     */

    static void fremovexattr(int filedes, byte[] name) throws UnixException {

        NativeBuffer buffer = NativeBuffers.asNativeBuffer(name);

        try {

            fremovexattr0(filedes, buffer.address());

        } finally {

            buffer.release();

        }

    }

    private static native void fremovexattr0(int filedes, long nameAddress)

        throws UnixException;

    /**

     * size_t flistxattr(int filedes, const char *list, size_t size)

     */

    static native int flistxattr(int filedes, long listAddress, int size)

        throws UnixException;

    // initialize

    private static native void init();

    static {

        AccessController.doPrivileged(new PrivilegedAction<Void>() {

            public Void run() {

                System.loadLibrary("nio");

                return null;

        }});

        init();

    }

}