VirtualFileSystem.VFSCore.Format C# (CSharp) Method

        public void Format(UInt32 inodeCapacity, UInt16 blockSizeKByte = 4)
        {
            if (inodeCapacity < 32)
            {
                throw new Exception("inode 至少为 32 个");
            }

            if (!new int[] { 1, 2, 4, 8 }.Contains(blockSizeKByte))
            {
                throw new Exception("block 大小只能为 1KB, 2KB, 4KB 或 8KB");
            }

            uint offset = 0;
            offset += (uint)Utils.GetStructSize<_SuperBlock>();
            offset += (inodeCapacity / 32 + 1) * 4;
            offset += (uint)Utils.GetStructSize<_INode>() * inodeCapacity;

            if (offset > deviceSize)
            {
                throw new Exception("inode 数量过大，结构超出存储介质最大空间");
            }

            // 可留给数据块位图和数据块区的大小
            uint sizeRemain = deviceSize - offset;

            // 全部留给数据块，可以有多少个数据块
            uint blockCapacity = sizeRemain / blockSizeKByte >> 10;

            if (blockCapacity < 128)
            {
                throw new Exception("磁盘空间太小，至少要可以容纳 128 个块");
            }

            // 删除 (blockCapacity / 32 + 1) * 4 大小的数据块，留作数据块位图使用
            blockCapacity -= ((blockCapacity / 32 + 1) * 4 / blockSizeKByte) + 1;

            // 初始化 superBlock
            superBlock = SuperBlock.Create(this, inodeCapacity, (UInt16)(blockSizeKByte << 10), blockCapacity);

            // 单个 inode BitVector 可容纳 32 位
            inodeBitmaps = new UInt32[inodeCapacity / 32 + 1];
            device.WriteArray(superBlock.pInodeBitVectors, inodeBitmaps, 0, inodeBitmaps.Length);

            // 单个 block BitVector 可容纳 32 位
            blockBitmaps = new UInt32[blockCapacity / 32 + 1];
            device.WriteArray(superBlock.pBlockBitVectors, blockBitmaps, 0, blockBitmaps.Length);

            // 写入根目录
            INodeDirectory.Create(this);

            Console.WriteLine("格式化成功。");
            Console.WriteLine("SuperBlock: {0}", superBlock.ToString());
        }

 /// <summary>
 /// 格式化磁盘
 /// </summary>
 /// <param name="inodeCapacity"></param>
 /// <param name="blockSizeKB"></param>
 public void Format(UInt32 inodeCapacity, UInt16 blockSizeKB)
 {
     vfs.Format(inodeCapacity, blockSizeKB);
 }