ntfs

问题 My C# app syncs files from a remote document management system to a filesystem. The document management system has metadata (date of last audit, secrecy, author...) which is associated with each file but not stored WITHIN each file. The files can be anything (bmp, xwd, pdf, unknown binary) I want to make these metadata visible on the local Windows filesystem. But I can't store metadata WITHIN each file. For instance, changing the secrecy of a file must NOT modify the checksum of the file.

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:

问题 I'm enumerating the files of a NTFS hard drive partition, by looking at the NTFS MFT / USN journal with: HANDLE hDrive = CreateFile(szVolumePath, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, NULL, NULL); DWORD cb = 0; MFT_ENUM_DATA med = { 0 }; med.StartFileReferenceNumber = 0; med.LowUsn = 0; med.HighUsn = MAXLONGLONG; // no change in perf if I use med.HighUsn = ujd.NextUsn; where "USN_JOURNAL_DATA ujd" is loaded before unsigned char pData[sizeof(DWORDLONG) +

问题 How can I automate the following manual steps in C#? Right click a folder in Windows Explorer; Properties -> Security -> Advanced -> Edit Un-tick "Include inheritable permissions from this object's parent" and click Remove. Click Add, choose a group and grant it Modify rights. I've found this article, which looks like exactly what i need, but I don't have and cant find Microsoft.Win32.Security . 回答1: check the code below: DirectoryInfo dInfo = new DirectoryInfo(strFullPath); DirectorySecurity

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Can anyone recommend a tool for MFT cleanup? I want to in my MFT restore the entries for files which once existed but have been deleted to a "pristine" state, with zeroed out entries. 回答1: This paper by Hal Berghel and David Hoelzer lists a whole bunch of products which claim to securely erase files. MFT

问题 As described here, using SetFileInformationByHandle with FILE_DISPOSITION_INFO allows one to set a file with an open handle to be deleted upon all handles being closed. However, I am trying to delete a file based on its file index (disk ID) retrieved by FILE_DISPOSITION_INFO and OpenFileById in order to safely delete files/directories in a directory which differ only in case. This is safe to do in my use case, as on an NTFS system, file indexes are persistent until deletion, negating the use

问题 I've got a console program written in C# which runs under user foo. The program creates a file. In some situations a web application running under the IUSR needs to be able to delete the files created by the console app. I'd like to grant DELETE (or anything equivalent) to IUSR when the file is created. How can I do that in C# ? I've found FileIOPermission and I'm not sure what that's for but as you can't specify a particular user I'm pretty sure that's now what I need. Anyone got a good

问题 [Using C# and Windows as platform] I have a camera that writes JPG files to a local folder in my PC. I want to load each file the camera drops, so I have a FileSystemWatcher that notifies me whenever a new picture is created, but the camera locks the file while it's being written , so if I try to load it just after being notified of its creation, I get an exception saying that the file is locked . Currently, I have a while loop (with a Thread.Sleep) that retries to load the image every 0.2

问题 I am trying to get the target of a junction in my program, but the only way I managed do it is: Requesting Backup privileges p-invoke CreateFile with special parameters to get a handle to the file/dir. DeviceIoControl call to the get the target. The 1st step will not work with normal user accounts, because they have no Backup privileges, and I don't want to get the UAC User Consent window every time I do this. I think this is doable somehow, because a normal "dir /A:L" command resolves the

问题 Context We have a homegrown filesystem-backed caching library. We currently have performance problems with one installation due to large number of entries (e.g. up to 100,000). The problem: we store all fs entries in one "cache directory". Very large directories perform poorly. We're looking at spreading those entries over subdirectories--as git does, e.g. 100 subdirectories with ~ 1,000 entries each. The question I understand that smaller directories sizes will help with filesystem access.