final int ownerGOffset = ServerMessageBlock.readInt4(buffer, bufferIndex); // offset to group sid
        bufferIndex += 4;
        final int saclOffset = ServerMessageBlock.readInt4(buffer, bufferIndex); // offset to sacl
        bufferIndex += 4;
        final int daclOffset = ServerMessageBlock.readInt4(buffer, bufferIndex);

        if (ownerUOffset > 0) {
            bufferIndex = start + ownerUOffset;

            this.ownerGroupSid = new SID(buffer, bufferIndex);
            bufferIndex += 8 + 4 * this.ownerGroupSid.sub_authority_count;
        }

        bufferIndex = start + daclOffset;

        if (daclOffset > 0) {
            bufferIndex++; // revision
            bufferIndex++;
            SMBUtil.readInt2(buffer, bufferIndex);
            bufferIndex += 2;