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Minor improvements of coffee-manager.

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This commit is contained in:
Niclas Finne 2012-11-19 14:47:35 +01:00 • committed by Nicolas Tsiftes
parent c23bb4cc5c
commit 2f72cb043d
3 changed files with 32 additions and 35 deletions
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12
tools/coffee-manager/se/sics/coffee/CoffeeImageFile.java
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@ -32,38 +32,40 @@
package se.sics.coffee;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
public class CoffeeImageFile implements CoffeeImage {
private RandomAccessFile imageFile;
private CoffeeConfiguration conf;
private final RandomAccessFile imageFile;
private final CoffeeConfiguration conf;
public CoffeeImageFile(String filename, CoffeeConfiguration conf) throws IOException {
this.conf = conf;
File file = new File(filename);
imageFile = new RandomAccessFile(file, "rw");
imageFile = new RandomAccessFile(filename, "rw");
if (imageFile.length() == 0) {
// Allocate a full file system image.
imageFile.setLength(conf.fsSize);
}
}
@Override
public CoffeeConfiguration getConfiguration() {
return conf;
}
@Override
public void read(byte[] bytes, int size, int offset) throws IOException {
imageFile.seek(conf.startOffset + offset);
imageFile.read(bytes, 0, size);
}
@Override
public void write(byte[] bytes, int size, int offset) throws IOException {
imageFile.seek(conf.startOffset + offset);
imageFile.write(bytes, 0, size);
}
@Override
public void erase(int size, int offset) throws IOException {
byte[] bytes = new byte[256];
int chunkSize;