alternate-data-stream | 易学教程

Block a file with Powershell

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问题 I want to block (not unblock) a file with Powershell. I want to cause Windows to believe that a file on disk was downloaded from the internet, or whatever other scenario exists such that files become blocked. I need this to test how some software I'm developing behaves in the presence of a blocked file. 回答1: If you're just trying to add the zone identifier you could try something like this: $data = "[ZoneTransfer] ZoneId=3" Set-Content example.txt -Stream "Zone.Identifier" -Value $data 来源：

Is this PInvoke code correct and reliable?

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问题 In this question I have searched for a simple solution to unblock files. Thanks to all the comments and answer, I have found a simple solution by PInvoking DeleteFile . It works, but because I've never used file-operations through PInvoke (Win32), I don't know if there are some pitfalls or if there is another method of calling DeleteFile to delete the alternate stream of a file. What I also don't know is if I have to wrap the call in a try/catch or if it is enough just to look the at the

How do I read Windows NTFS's Alternate Data Stream using Java's IO?

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问题 I'm trying to have my Java application read all the data in a given path. So files, directories, metadata etc. This also includes one weird thing NTFS has called Alternate Data Stream (ADS). Apparently it's like a second layer of data in a directory or file. You can open the command prompt and create a file in the ADS using ':', for example: C:\ADSTest> echo test>:ads.txt So, C:\ADSTest> notepad :ads.txt Should open a notepad that contains the string "test" in it. However, if you did: C:

Mercurial and NTFS Alternate data stream

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问题 How does Mercurial handle Alternate Data Streams (in the NTFS file system)? If it can't handle that, is there a DCVS that does? EDIT: When I change version with update , what happens to the ADS ? Is it lost (erased)? Is it versioned too? Is it alltogether ignored? 回答1: Mercurial does not store alternate data stream. Additionally, they are likely to be overwritten on update. I don't think any of the open source VCS I know handle that kind of thing (even permissions are usually not handled). 来源

Working C# Example: Writing & Reading NTFS Alternate Data Stream Under Win7 64 bit

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问题 I'd like to be able to use an alternate data stream to store some synchronization information for files that are referenced in a database application I'm building. However, every approach I've found on the web has failed in one way or another. Not being experienced at Win32 API programming I'm not sure why the failures are occurring. In some cases the method calls appear to succeed, only no alternate stream is created (i.e., I can't later read from the alternate file, nor can

How do I read Windows NTFS's Alternate Data Stream using Java's IO?

阅读更多关于 How do I read Windows NTFS's Alternate Data Stream using Java's IO?

I'm trying to have my Java application read all the data in a given path. So files, directories, metadata etc. This also includes one weird thing NTFS has called Alternate Data Stream (ADS). Apparently it's like a second layer of data in a directory or file. You can open the command prompt and create a file in the ADS using ':', for example: C:\ADSTest> echo test>:ads.txt So, C:\ADSTest> notepad :ads.txt Should open a notepad that contains the string "test" in it. However, if you did: C:\ADSTest> dir You will not be able to see ads.txt. However, if you use the dir option that displays ADS data

Working C# Example: Writing & Reading NTFS Alternate Data Stream Under Win7 64 bit

阅读更多关于 Working C# Example: Writing & Reading NTFS Alternate Data Stream Under Win7 64 bit

I'd like to be able to use an alternate data stream to store some synchronization information for files that are referenced in a database application I'm building. However, every approach I've found on the web has failed in one way or another. Not being experienced at Win32 API programming I'm not sure why the failures are occurring. In some cases the method calls appear to succeed, only no alternate stream is created (i.e., I can't later read from the alternate file, nor can AlternateStreamViewer see it). In other cases the write succeeds, but the read fails because calling CreateFile()

Is this PInvoke code correct and reliable?

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In this question I have searched for a simple solution to unblock files. Thanks to all the comments and answer, I have found a simple solution by PInvoking DeleteFile . It works, but because I've never used file-operations through PInvoke (Win32), I don't know if there are some pitfalls or if there is another method of calling DeleteFile to delete the alternate stream of a file. What I also don't know is if I have to wrap the call in a try/catch or if it is enough just to look the at the boolean result. In my tests, no exceptions were raised, but I don't know what will happen in the real world

Unblock File from within .net 4 c#

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Is there a possibility to unblock a file that is downloaded from the internet from within a c# program. Surfing the internet I have learned, that the information is written in an alternative stream of a (NTFS) file that contains the current zone information (value 3 is from the internet and is interpreted as blocked). Is there a managed possiblity to either clear or change the zone information (unblock) of a file or is there a managed copy function that copies the files without the zone information? If not, how can I do with PInvoke but without including a foreign assembly (I'm not allowed to

NTFS alternate data streams

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问题 Today I have seen this weird magic NTFS system supports: each file can have multiple data streams. Basically one could have a file a.txt of 0b size but there can be any number of bytes hidden in a separate data stream for that file. This is strictly NTFS related magic and I don't see any noble reason for having these streams around. You can look for NTFS streams with the help of the streams utility from Sysinternals. This will show you that basically every one of those nasty thumbs.db files