void loadFS() throws Exception {
byte sb[] = new byte[1024];
file.seek(0);
file.read(sb);
superBlock = new SuperBlock(sb);
superBlock.loadDMap(superBlock.getLatestVerison(), file);
lastblock = superBlock.lastblock;
version = superBlock.getLatestVerison();
Main.print("\nVersion Loaded: " + version + "\n");
}
@SuppressWarnings({"unchecked"})
void initializeFS() {
try {
JSONObject obj = new JSONObject();
JSONArray jar = new JSONArray();
jar.add("0 1#1");
obj.put("version", jar);
obj.put("lastblock", "1");
version = 0;
file.write(obj.toJSONString().getBytes());
superBlock = new SuperBlock(obj.toJSONString().getBytes());
// Done super block
lastblock = 1;
file.seek(1024);
// root direc
JSONObject obj1 = new JSONObject();
JSONArray ch_dir = new JSONArray();
obj1.put("dir", ch_dir);
file.write(obj1.toJSONString().getBytes());
file.close();
getFile();
superBlock.loadDMap(version, file);
} catch (IOException | ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
void copyfs(int ver, String outputdir) {
try {
superBlock.copyfs(ver, outputdir, file);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
void switchVersion(int ver) {
try {
superBlock.loadDMap(ver, file);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private static void dumpContents(String[] args) {
try {
RandomAccessFile file = open(args[0]);
SuperBlock sb = getSuperBlock(file);
DirectoryBlock db = readDirB(file);
Dentry[] dentries = db.getDentries();
int i;
Arrays.sort(dentries);
for (i = 0; i < dentries.length; ++i) {
if (dentries[i].getIno() == Inode.EMPTY) continue;
System.out.println(dentries[i].getFileName());
int ino = dentries[i].getIno();
Inode inode = new Inode(sb);
int blkNum =
VFS.BLK_DIRINODE + (sb.getInodeBlockRatio() + 1) * (ino / sb.getInodesPerBlock());
byte[] block = readSector(file, blkNum);
inode.setBytes(block, ino % sb.getInodesPerBlock());
MessageDigest md = MessageDigest.getInstance("MD5");
ByteBuffer[] bbArr = new ByteBuffer[inode.getDataBlocksUsed()];
for (int j = 0; j < inode.getDataBlocksUsed(); ++j) {
blkNum = inode.getDataBlock(j);
block = readSector(file, blkNum);
md.reset();
bbArr[j] = ByteBuffer.wrap(md.digest(block));
}
Arrays.sort(bbArr);
for (int j = 0; j < inode.getDataBlocksUsed(); ++j) {
byte[] digest = bbArr[j].array();
for (int k = 0; k < digest.length; k++) System.out.print(toHexString((int) digest[k], 2));
System.out.println("");
}
}
} catch (Exception e) {
System.err.println("Error");
}
}
int write(String name, int bn, String name_input) {
superBlock.write(version, name, name_input, bn, file);
return 1;
}
void deleteFile(String name) {
superBlock.deleteFile(name, file);
}
void cd(String dr) {
superBlock.changedr(dr);
}
void read(String name, String input, int blk) {
superBlock.read(version, name, input, blk, file);
}
void createCheckPoint() {
superBlock = superBlock.writeCheckPoint();
version++;
System.out.println("Version : " + version);
}
void listfiles() {
superBlock.listfile();
}
