Ejemplo n.º 1
0
        public byte[] GetBytes(int bytesPerIndexRecord, bool applyUsaProtection)
        {
            int               strideCount             = bytesPerIndexRecord / MultiSectorHelper.BytesPerStride;
            ushort            updateSequenceArraySize = (ushort)(1 + strideCount);
            MultiSectorHeader multiSectorHeader       = new MultiSectorHeader(ValidSignature, UpdateSequenceArrayOffset, updateSequenceArraySize);

            int updateSequenceArrayPaddedLength = (int)Math.Ceiling((double)(updateSequenceArraySize * 2) / 8) * 8;

            m_indexHeader.EntriesOffset   = (uint)(IndexHeader.Length + updateSequenceArrayPaddedLength);
            m_indexHeader.TotalLength     = (uint)(IndexHeader.Length + updateSequenceArrayPaddedLength + IndexEntry.GetLength(IndexEntries));
            m_indexHeader.AllocatedLength = (uint)(bytesPerIndexRecord - IndexHeaderOffset);

            int length = applyUsaProtection ? bytesPerIndexRecord : GetNumberOfBytesInUse(bytesPerIndexRecord);

            byte[] buffer = new byte[length];
            multiSectorHeader.WriteBytes(buffer, 0x00);
            LittleEndianWriter.WriteUInt64(buffer, 0x08, LogFileSequenceNumber);
            LittleEndianWriter.WriteUInt64(buffer, 0x10, (ulong)RecordVBN);
            m_indexHeader.WriteBytes(buffer, 0x18);
            LittleEndianWriter.WriteUInt16(buffer, UpdateSequenceArrayOffset, UpdateSequenceNumber);

            IndexEntry.WriteIndexEntries(buffer, UpdateSequenceArrayOffset + updateSequenceArrayPaddedLength, IndexEntries);

            if (applyUsaProtection)
            {
                MultiSectorHelper.ApplyUsaProtection(buffer, 0);
            }
            return(buffer);
        }
Ejemplo n.º 2
0
        public byte[] GetBytes(int bytesPerIndexRecord)
        {
            int               strideCount             = bytesPerIndexRecord / MultiSectorHelper.BytesPerStride;
            ushort            updateSequenceArraySize = (ushort)(1 + strideCount);
            MultiSectorHeader multiSectorHeader       = new MultiSectorHeader(ValidSignature, UpdateSequenceArrayOffset, updateSequenceArraySize);

            int updateSequenceArrayPaddedLength = (int)Math.Ceiling((double)(updateSequenceArraySize * 2) / 8) * 8;

            m_indexHeader.EntriesOffset   = (uint)(IndexHeader.Length + updateSequenceArrayPaddedLength);
            m_indexHeader.TotalLength     = (uint)(IndexHeader.Length + updateSequenceArrayPaddedLength + IndexEntry.GetLength(IndexEntries));
            m_indexHeader.AllocatedLength = (uint)(bytesPerIndexRecord - IndexHeaderOffset);

            byte[] buffer = new byte[bytesPerIndexRecord];
            multiSectorHeader.WriteBytes(buffer, 0x00);
            LittleEndianWriter.WriteUInt64(buffer, 0x08, LogFileSequenceNumber);
            LittleEndianWriter.WriteUInt64(buffer, 0x10, (ulong)RecordVBN);
            m_indexHeader.WriteBytes(buffer, 0x18);

            IndexEntry.WriteIndexEntries(buffer, UpdateSequenceArrayOffset + updateSequenceArrayPaddedLength, IndexEntries);

            // Write UpdateSequenceNumber and UpdateSequenceReplacementData
            List <byte[]> updateSequenceReplacementData = MultiSectorHelper.EncodeSegmentBuffer(buffer, 0, bytesPerIndexRecord, UpdateSequenceNumber);

            MultiSectorHelper.WriteUpdateSequenceArray(buffer, UpdateSequenceArrayOffset, updateSequenceArraySize, UpdateSequenceNumber, updateSequenceReplacementData);
            return(buffer);
        }
Ejemplo n.º 3
0
        public override byte[] GetBytes()
        {
            this.Data = new byte[this.DataLength];
            m_indexHeader.EntriesOffset   = IndexHeader.Length;
            m_indexHeader.TotalLength     = (uint)this.Data.Length - IndexHeaderOffset;
            m_indexHeader.AllocatedLength = (uint)this.Data.Length - IndexHeaderOffset;

            LittleEndianWriter.WriteUInt32(this.Data, 0x00, (uint)IndexedAttributeType);
            LittleEndianWriter.WriteUInt32(this.Data, 0x04, (uint)CollationRule);
            LittleEndianWriter.WriteUInt32(this.Data, 0x08, (uint)BytesPerIndexRecord);
            ByteWriter.WriteByte(this.Data, 0x0C, BlocksPerIndexRecord);
            m_indexHeader.WriteBytes(this.Data, 0x10);
            IndexEntry.WriteIndexEntries(this.Data, IndexHeaderOffset + IndexHeader.Length, IndexEntries);

            return(base.GetBytes());
        }