如何在Windows 7中以编程方式将硬链接与实际文件区分开? [英] How can I programmatically distinguish hard links from real files in Windows 7?

问题描述

我在文件大小和已用磁盘空间之间有所区别(总文件大小甚至大于磁盘大小).我想是因为Windows 7/Vista中存在许多硬链接(到WinSxS组件).但是，如何在Windows 7中以编程方式将硬链接与实际文件区分开?

I have a difference between files size and used disk space (total file size is even more than disk size). I suppose because there are many hard links exist (to WinSxS components) in Windows 7/Vista. But how can I programmatically distinguish hard links from real files in Windows 7?

推荐答案

您不能，因为所有文件都是硬链接.不完全是.文件只是到数据块的硬链接-目录中的列表. (也许您是指符号链接?您可以区分那些...)

You can't, because all files are hard links. No. Really. A file is just a hard link to a data chunk -- a listing in a directory. (Perhaps you mean symlinks? You can distinguish those...)

使用Windows提供的内置方法来计算已用空间.

Use the builtin methods Windows provides for calculating used space instead.

参考(强调我的

链接本身只是一个目录条目，并且没有安全描述符.因此，当您更改硬链接的安全描述符时，即更改了基础文件的安全描述符，并且所有指向该文件的硬链接都允许新指定的访问.

The link itself is only a directory entry, and does not have a security descriptor. Therefore, when you change the security descriptor of a hard link, you a change the security descriptor of the underlying file, and all hard links that point to the file allow the newly specified access.

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