/// <summary>
/// 从存储介质中获取 inode
/// </summary>
/// <param name="vfs"></param>
/// <param name="index"></param>
/// <returns></returns>
public static INode Load(VFSCore vfs, UInt32 index)
{
if (index >= vfs.GetSuperBlock().data.inodeCapacity)
{
throw new Exception("无效 inode 编号");
}
INode inode = null;
if (inodeInstances.ContainsKey(index))
{
inode = inodeInstances[index];
return(inode);
}
else
{
_INode data = vfs.GetDevice().Read <_INode>(GetPosition(vfs, index));
inode = new INode(vfs, data, index);
inodeInstances[index] = inode;
}
inode.data.accessTime = (UInt64)DateTime.Now.Ticks;
inode.Save();
return(inode);
}
public INode(VFSCore vfs, _INode data, UInt32 index = UInt32.MaxValue)
{
this.vfs = vfs;
this.data = data;
this.index = index;
UInt32 blockSize = vfs.GetSuperBlock().data.blockSize;
UInt32 IndexPerBlock = blockSize / sizeof(UInt32);
BoundLv0 = 12 * blockSize;
BoundLv1 = BoundLv0 + IndexPerBlock * blockSize;
}
/// <summary>
/// 创建一个新的 inode
/// </summary>
/// <param name="vfs"></param>
/// <param name="index"></param>
/// <returns></returns>
public static INode Create(VFSCore vfs, UInt32 index, UInt32 flags, UInt32 owner)
{
if (index >= vfs.GetSuperBlock().data.inodeCapacity)
{
throw new Exception("无效 inode 编号");
}
_INode data = new _INode(flags, owner);
INode inode = new INode(vfs, data, index);
inode.Save();
inodeInstances[index] = inode;
return(inode);
}
/// <summary>
/// 创建一个新的 inode
/// </summary>
/// <param name="vfs"></param>
/// <param name="index"></param>
/// <returns></returns>
public static INode Create(VFSCore vfs, UInt32 index, UInt32 flags, UInt32 owner)
{
if (index >= vfs.GetSuperBlock().data.inodeCapacity)
{
throw new Exception("无效 inode 编号");
}
_INode data = new _INode(flags, owner);
INode inode = new INode(vfs, data, index);
inode.Save();
inodeInstances[index] = inode;
return inode;
}
public INode(VFSCore vfs, _INode data, UInt32 index = UInt32.MaxValue)
{
this.vfs = vfs;
this.data = data;
this.index = index;
UInt32 blockSize = vfs.GetSuperBlock().data.blockSize;
UInt32 IndexPerBlock = blockSize / sizeof(UInt32);
BoundLv0 = 12 * blockSize;
BoundLv1 = BoundLv0 + IndexPerBlock * blockSize;
}
