void FileSystem::writeInodeEntry(PartitionEntry *partition,
unsigned int inodeNumber) {
InodeData inode = readInode(partition, lostFoundInode);
InodeData inode_cur = readInode(partition, inodeNumber);
int blockNumber = readDataBlocks(partition, lostFoundInode,
(blockSize / SECTOR_SIZE_BYTES),
inode.dataBlocksPointers, 0, 0, 2);
if (blockNumber == -1)
return;
unsigned int blockSector = getBlockSector(partition, blockNumber);
unsigned char buf[blockSize];
unsigned int i = 0;
readSectors(blockSector, (blockSize / SECTOR_SIZE_BYTES), buf);
while (i < blockSize - 1) {
struct ext2_dir_entry_2 *fileEntry = (struct ext2_dir_entry_2 *) (buf + i);
if (fileEntry->rec_len
> ((((__u16 ) 8 + fileEntry->name_len) + 3) & ~0x03)) {
fileEntry->rec_len = (((__u16 ) 8 + fileEntry->name_len) + 3) & ~0x03;
i = i + fileEntry->rec_len;
fileEntry = (struct ext2_dir_entry_2*) (buf + i);
fileEntry->inode = inodeNumber;
sprintf(fileEntry->name, "%d", inodeNumber);
fileEntry->rec_len = (__u16)(blockSize - i);
fileEntry->name_len = (__u8)(strlen(fileEntry->name));
if (!(inode_cur.fileType & EXT2_S_IFREG) == 0)
fileEntry->file_type = 1;
else if (!(inode_cur.fileType & EXT2_S_IFDIR) == 0)
fileEntry->file_type = 2;
writeSectors(blockSector, (blockSize / SECTOR_SIZE_BYTES), buf);
return;
} else {
i = i + fileEntry->rec_len;
}
}
}
UmdReader::UmdReader(const QString name, QWidget *parent):QSplitter(parent)
{
bookName=name;
creatParser();
creatWidget();
readChapters();
readDataBlocks();
creatConnection();
}
void FileSystem::readRootInode(PartitionEntry *partition) {
unsigned int i;
InodeData inode = readInode(partition, 2);
blockSize = 1024 << super_block.s_log_block_size;
firstRootBataBlock = inode.dataBlocksPointers[0];
readDataBlocks(partition, 2, 2, inode.dataBlocksPointers, 1, 1, 2);
readDataBlocks(partition, 2, 2, inode.dataBlocksPointers, 2, 1, 2);
for (i = 11; i <= super_block.s_inodes_count; i++) {
InodeData in = readInode(partition, i);
if (!(in.fileType & EXT2_S_IFDIR) == 0
&& checkInodeBitmap(partition, i) == 1) {
readDataBlocks(partition, i, -1, in.dataBlocksPointers, 0, 2, 2);
}
}
for (i = 11; i <= super_block.s_inodes_count; i++) {
unsigned int bitmapValue = checkInodeBitmap(partition, i);
if (bitmapValue == 1 && inodeMap[i] == 0) {
InodeData in = readInode(partition, i);
if (in.fileType != 0) {
QString tmpStr = QString("Inode ") + QString::number(i)
+ QString(" has invalid entry in inode bitmap. Bitmap value: ")
+ QString::number(bitmapValue) + QString(", collected value:")
+ QString::number(inodeMap[i]) + QString(".\n");
textBrowser->append(tmpStr);
errorQt++;
if (performRepair) {
writeInodeEntry(partition, i);
}
}
}
}
readDataBlocks(partition, 2, 2, inode.dataBlocksPointers, 1, 1, 2);
readDataBlocks(partition, 2, 2, inode.dataBlocksPointers, 3, 1, 2);
for (i = 1; i <= super_block.s_inodes_count; i++) {
InodeData in = readInode(partition, i);
if (inodeLinkCount[i] != in.hardLinksQt) {
if (in.fileType != 0) {
QString tmpStr = QString("Inode ") + QString::number(i)
+ QString(
" has invalid inode count in inode entry. Current value : ")
+ QString::number(in.hardLinksQt) + QString(", collected value:")
+ QString::number(inodeLinkCount[i]) + QString(".\n");
textBrowser->append(tmpStr);
errorQt++;
}
if (performRepair) {
UpdateHardLinkCounter(partition, i, inodeLinkCount[i]);
}
}
}
readDataBlocks(partition, 2, 2, inode.dataBlocksPointers, 4, 1, 2);
for (i = 1; i <= super_block.s_blocks_count; i++) {
unsigned int bitmapValue = checkBlockBitmap(partition, i);
if (i < firstRootBataBlock && checkBlockBitmap(partition, i) == 0) {
QString tmpStr =
QString("Block ") + i
+ QString(
" has invalid entry in block bitmap. Bitmap value: 0, collected value: 1.\n");
textBrowser->append(tmpStr);
errorQt++;
if (performRepair) {
setBlockBitmap(partition, i);
}
}
if (blockMap[i] == 1 && bitmapValue != blockMap[i]) {
QString tmpStr = QString("Block ") + QString::number(i)
+ QString(" has invalid entry in block bitmap. Bitmap value: ")
+ QString::number(bitmapValue) + QString(", collected value: ")
+ QString::number(blockMap[i]) + QString(".\n");
textBrowser->append(tmpStr);
errorQt++;
if (performRepair) {
setBlockBitmap(partition, i);
}
}
}
}
unsigned int FileSystem::parseFilesystem(PartitionEntry *partition,
unsigned int blockNumber,
unsigned int passNumber,
unsigned int currentInode,
unsigned int parentInode,
int performCheck) {
unsigned char buf[blockSize];
unsigned int i = 0;
struct ext2_dir_entry_2 *fileEntry;
unsigned int blockSector = getBlockSector(partition, blockNumber);
readSectors(blockSector, (blockSize / SECTOR_SIZE_BYTES), buf);
while (i < blockSize - 1) {
fileEntry = (struct ext2_dir_entry_2 *) (buf + i);
if (fileEntry->inode == 0)
return -1;
if (currentInode == 2 && parentInode == 2
&& (strcmp(fileEntry->name, "lost+found") == 0)) {
lostFoundInode = fileEntry->inode;
}
if (passNumber == 1 && performCheck == 1) {
if (fileEntry->inode != currentInode
&& (strcmp(fileEntry->name, ".") == 0)) {
QString tmpStr = QString("Entry '.' has inode ")
+ QString::number(fileEntry->inode) + QString(" instead of ")
+ QString::number(currentInode) + QString(".\n");
textBrowser->append(tmpStr);
errorQt++;
fileEntry->inode = currentInode;
writeSectors(blockSector, (blockSize / SECTOR_SIZE_BYTES), buf);
}
if (fileEntry->inode != parentInode && (!strcmp(fileEntry->name, ".."))) {
QString tmpStr = QString("Entry '..' has inode ")
+ QString::number(fileEntry->inode) + QString(" instead of ")
+ QString::number(parentInode) + QString(".\n");
textBrowser->append(tmpStr);
errorQt++;
fileEntry->inode = parentInode;
writeSectors(blockSector, (blockSize / SECTOR_SIZE_BYTES), buf);
}
} else if (passNumber == 2 && performCheck == 1) {
inodeMap[fileEntry->inode] = 1;
} else if (passNumber == 3 && performCheck == 1) {
inodeLinkCount[fileEntry->inode] += 1;
} else if (passNumber == 4 && performCheck == 1) {
blockMap[blockNumber] = 1;
}
if (strcmp(fileEntry->name, ".") && strcmp(fileEntry->name, "..")
&& performCheck != 0) {
if (performCheck == 2) {
inodeMap[fileEntry->inode] = 1;
}
InodeData inode = readInode(partition, fileEntry->inode);
if ((inode.fileType & 0xF000) == EXT2_S_IFREG && passNumber == 4) {
readDataBlocks(partition, fileEntry->inode, currentInode,
inode.dataBlocksPointers, passNumber, performCheck, 1);
} else if (!(inode.fileType & EXT2_S_IFDIR) == 0) {
readDataBlocks(partition, fileEntry->inode, currentInode,
inode.dataBlocksPointers, passNumber, performCheck, 2);
}
}
i = i + fileEntry->rec_len;
}
if (fileEntry != NULL && fileEntry->rec_len > 8 + fileEntry->name_len
&& (fileEntry->rec_len - 8 - fileEntry->name_len) > 16 && !performCheck)
return blockNumber;
return -1;
}
