How to check if a file has Alternate Data Streams?

问题

Is there a way in Delphi to check if a file has any Alternate Data Streams?

回答1:

Have a look at the Win32 API FindFirstStreamW() and FindNextStreamW() functions:

Enumerates the first stream with a ::$DATA stream type in the specified file or directory.

Continues a stream search started by a previous call to the FindFirstStreamW function.

However, a file or directory may have other stream types besides ::$DATA, which are not enumerable in the Win32 API, they are internal to NTFS itself.

See MSDN for more details.

Using Streams

File Streams

To enumerate non-$DATA streams, you would have to read the filesystem directly, such as with BackupRead() and BackupSeek(). See Enumerating Alternate Data Streams on CodeProject for details on that.

来源：https://stackoverflow.com/questions/44270479/how-to-check-if-a-file-has-alternate-data-streams