/// <summary>
/// 添加一个文件目录项
/// </summary>
/// <param name="name"></param>
/// <param name="inodeIndex"></param>
/// <returns></returns>
public Boolean Add(String name, INode inode)
{
if (Contains(name))
{
return(false);
}
entries[name] = inode.index;
inode.data.linkCount++;
inode.Save();
Save();
return(true);
}
/// <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>
/// 删除一个目录项
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public Boolean Delete(String name)
{
if (!Contains(name))
{
return(false);
}
if (name == "." || name == "..")
{
return(false);
}
var inodeIndex = entries[name];
INode inode = INode.Load(vfs, inodeIndex);
if (inode.IsDirectory())
{
// 删除非空目录项:递归删除
INodeDirectory id = INodeDirectory.Load(vfs, inodeIndex);
if (id.Size() > 2)
{
var l = id.List();
foreach (var pair in l)
{
id.Delete(pair.Key);
}
}
}
inode.data.linkCount--;
if (inode.data.linkCount == 0)
{
inode.Resize(0);
vfs.DeAllocateINode(inode.index);
}
else
{
inode.Save();
}
entries.Remove(name);
Save();
return(true);
}
/// <summary>
/// 添加一个文件目录项
/// </summary>
/// <param name="name"></param>
/// <param name="inodeIndex"></param>
/// <returns></returns>
public Boolean Add(String name, INode inode)
{
if (Contains(name))
{
return false;
}
entries[name] = inode.index;
inode.data.linkCount++;
inode.Save();
Save();
return true;
}
/// <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;
}
