/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.test.fs;
import java.nio.ByteBuffer;
import org.jnode.driver.DeviceManager;
import org.jnode.driver.block.BlockDeviceAPI;
import org.jnode.driver.bus.ide.IDEDevice;
import org.jnode.naming.InitialNaming;
/**
* This class test basic IO on a block device.
*
* @author gbin
*/
public class LowLevelIoTest {
public static void main(String[] args) {
DeviceManager dm;
try {
dm = InitialNaming.lookup(DeviceManager.NAME);
IDEDevice current = (IDEDevice) dm.getDevice(args[0]);
BlockDeviceAPI api = current.getAPI(BlockDeviceAPI.class);
int size = (int) (Math.random() * 5 /*256*/) * 512;
int offset = (int) (Math.random() * 10000) * 512;
System.out.println("Create Random Buffer");
System.out.println("Size = " + size);
byte[] src = new byte[size];
for (int i = 0; i < size; i++) {
src[i] = (byte) (Math.random() * 255);
}
System.out.println("Put it at " + offset);
api.write(offset, ByteBuffer.wrap(src));
System.out.println("Retreive it back ...");
byte[] dest = new byte[size];
api.read(offset, ByteBuffer.wrap(dest));
System.out.println("Check consistency ...");
for (int i = 0; i < size; i++) {
System.out.print(src[i] + "|" + dest[i] + ",");
if (src[i] != dest[i])
throw new Exception("Inconsistency");
}
} catch (Exception e) {
e.printStackTrace();
}
}
}