public int ReadFrom(byte[] buffer, int offset)
{
offset += ReadHeader(buffer, offset);
BestFree = new BlockDirectoryDataFree[3];
for (int i = 0; i < BestFree.Length; i++)
{
var free = new BlockDirectoryDataFree();
offset += free.ReadFrom(buffer, offset);
BestFree[i] = free;
}
offset += HeaderPadding;
var entries = new List <BlockDirectoryData>();
var eof = buffer.Length;
while (offset < eof)
{
BlockDirectoryData entry;
if (buffer[offset] == 0xff && buffer[offset + 0x1] == 0xff)
{
//unused
entry = new BlockDirectoryDataUnused();
}
else
{
entry = new BlockDirectoryDataEntry(_context);
}
offset += entry.ReadFrom(buffer, offset);
entries.Add(entry);
}
Entries = entries.ToArray();
return(buffer.Length - offset);
}
public int ReadFrom(byte[] buffer, int offset)
{
Magic = Utilities.ToUInt32BigEndian(buffer, offset);
BestFree = new BlockDirectoryDataFree[3];
offset += 0x4;
for (int i = 0; i < BestFree.Length; i++)
{
var free = new BlockDirectoryDataFree();
offset += free.ReadFrom(buffer, offset);
BestFree[i] = free;
}
var entries = new List <BlockDirectoryData>();
var eof = buffer.Length;
while (offset < eof)
{
BlockDirectoryData entry;
if (buffer[offset] == 0xff && buffer[offset + 0x1] == 0xff)
{
//unused
entry = new BlockDirectoryDataUnused();
}
else
{
entry = new BlockDirectoryDataEntry();
}
offset += entry.ReadFrom(buffer, offset);
entries.Add(entry);
}
Entries = entries.ToArray();
return(buffer.Length - offset);
}
public int ReadFrom(byte[] buffer, int offset)
{
if (sb_ok == false)
{
throw new IOException("not initial SuperBlock");
}
Magic = EndianUtilities.ToUInt32BigEndian(buffer, offset);
BestFree = new BlockDirectoryDataFree[3];
if (Magic == BlockDirectory.HeaderMagicV5)
{
offset += 48;//xfs_dir3_blk_hdr
}
else
{
offset += 0x4;
}
for (int i = 0; i < BestFree.Length; i++)
{
var free = new BlockDirectoryDataFree();
offset += free.ReadFrom(buffer, offset);
BestFree[i] = free;
}
if (Magic == BlockDirectory.HeaderMagicV5)
{
offset += 4;//__be32 xfs_dir3_data_hdr.pad
}
LeafStale = EndianUtilities.ToUInt32BigEndian(buffer, buffer.Length - 0x4);
LeafCount = EndianUtilities.ToUInt32BigEndian(buffer, buffer.Length - 0x8);
var entries = new List <BlockDirectoryData>();
var eof = buffer.Length - 0x8 - LeafCount * 0x8;
while (offset < eof)
{
BlockDirectoryData entry;
if (buffer[offset] == 0xff && buffer[offset + 0x1] == 0xff)
{
//unused
entry = new BlockDirectoryDataUnused(SuperBlock);
}
else
{
entry = new BlockDirectoryDataEntry(SuperBlock);
}
offset += entry.ReadFrom(buffer, offset);
entries.Add(entry);
}
Entries = entries.ToArray();
return(buffer.Length - offset);
}
public int ReadFrom(byte[] buffer, int offset)
{
Magic = EndianUtilities.ToUInt32BigEndian(buffer, offset);
BestFree = new BlockDirectoryDataFree[3];
if (Magic == HeaderMagicV5)
{
offset += 48;//xfs_dir3_blk_hdr
}
else
{
offset += 0x4;
}
for (int i = 0; i < BestFree.Length; i++)
{
var free = new BlockDirectoryDataFree();
offset += free.ReadFrom(buffer, offset);
BestFree[i] = free;
}
if (Magic == HeaderMagicV5)
{
offset += 4;//__be32 xfs_dir3_data_hdr.pad
}
var entries = new List <BlockDirectoryData>();
var eof = buffer.Length;
while (offset < eof)
{
BlockDirectoryData entry;
if (buffer[offset] == 0xff && buffer[offset + 0x1] == 0xff)
{
//unused
entry = new BlockDirectoryDataUnused(superblock);
}
else
{
entry = new BlockDirectoryDataEntry(superblock);
}
offset += entry.ReadFrom(buffer, offset);
entries.Add(entry);
}
Entries = entries.ToArray();
return(buffer.Length - offset);
}
